Where to Sleep in Berlin:

Grand Hyatt: It ain't cheap, but once you're inside it sure is stylish. Located in Potsdamer Platz, the Grand Hyatt Berlin is in a great part of town for business travellers; within a stone's throw of Mitte (the centre) and with good transport links to the ICC Berlin.
Marlene Dietrich Platz 2, 10785, Berlin, Germany; Tel: +49 (0)30 2553 1234; Web: www.berlin.grand.hyatt.com.

Hotel Adlon Kempinski: Royalty and countless celebrities have been guests at the legendary Hotel Adlon, Berlin's Grand Dame of the hotel scene. Right next to the Brandenburg Gate, business travellers will love its central location, fantastic service, conference and meeting facilities, and the luxurious rooms. 
Unter den Linden 77, 10117, Berlin, Germany; Tel: +49 (0)30 2022610; Web: www.hotel-adlon.de.

Hotel de Rome: Housed in one of the few surviving pre-war buildings in Berlin, the Hotel de Rome is located in the former Dresdener Bank building, which has been brilliantly restored. Old bank vaults now house a chic, granite-clad spa; rooms and suites are stylish and spacious with quirky design features that play on the hotel's history. Whether you're a guest or not, don't miss Hotel de Rome's snazzy bar.
Behrenstraβe 37, 10117, Berlin, Germany; Tel: +49 (0)30 4606090; Web: www.hotelderome.com.

The Regent Berlin: Splendour, opulence and all-out luxury are what business travellers staying at The Regent Berlin can expect. Step outside and you're in Berlin's 17th Century Gendarmenmarkt, one of the city's most impressive squares. This is a place to wow the pants off your clients.
Charlottenstraße 49, 10117, Berlin, Germany; Tel: +49 (0)30 2033 6666; Web:www.theregentberlin.com.

Where to Eat in Berlin:

Borchardt: This 1920s style restaurant is a Berlin institution and the place to see and be seen. A hotspot for German politicians and celebrities, Borchardt is a fun, buzzy place to take clients. At lunchtime the set menu only costs €9, so dining in style needn't land your company in the red. Booking in advance is essential.
Französische Straβe 47, 10117, Berlin, Germany; Tel: +49 (0)30 8188 6262.

Adnan: This Charlottenburg institution offers fantastic Italian cuisine in a warm, friendly atmosphere. If the weather is nice you can take advantage of Adnan's large terrace and dine with al fresco.
Schlüterstraβe 33, 10629, Berlin, Germany; Tel: +49 (0)30 5471 0590.

Grill Royal: Head to Grill Royal outstanding steaks, modern interiors, a cosmopolitan "see and be seen" vibe, and great views of the River Spree and the Pergamon Museum.
Friedrichstraβe 105b, 10117, Berlin, Germany; Tel: +49 (0)30 2887 9288; Web: www.grillroyal.de.

Lutter & Wegner: If you're after fantastic traditional German food Lutter & Wegner is the place to go. Their Wiener schnitzel will leave you longing for more – the tender veal, the crunchy crumbs, the spritz of lemon, lecker… – oh, and your clients will love you too.
Charlottenstraβe 56, 10117, Berlin, Germany; Tel: +49 (0)30 2029540; Web: www.l-w-berlin.de.

Vox: Super fresh sushi, an open kitchen, plus an outdoor terrace = a great place to schmooze with business contacts. Vox also has a private dining room for up to 12 guests should you want more privacy.
Grand Hyatt Berlin, Marlene Dietrich Platz 2, 10785, Berlin, Germany; Tel: +49 (0)30 2553 1234; Email: vox.berlin(at)hyatt.com.

Hugo's: Innovative haute cuisine in a stunning setting: Hugo's has wow-factor views over Berlin, including the Brandenburg Gate and the Victory Column (aka the "Chick on a Stick"). The atmosphere is perfect for a business dinner, but the food, fine wines and views don’t come cheap so bring your company credit card. 
14th Floor, Intercontinental Berlin, Budapester Straße 2, 10787, Berlin, Germany; Tel: +49 (0)30 26020; Web: www.berlin.intercontinental.com.

Al Contadino: If this Italian restaurant is good enough for Brad Pitt then it should impress your VIP guests. The fresh mozzarella will have you drooling, which isn't such a good look if the Hollywood elite are back in town.
Auguststraβe 34, 10119, Berlin, Germany; Tel: +49 (0)30 2819023; Web: www.biancomassaro.de.

Where to Drink in Berlin:

Pony Bar: Popular with the trendy Mitte crowd, Pony Bar is a great place to go if you want to show your clients and colleagues a bonafide Berlin time. Great music, cheap cocktails, and Berlin's bright young things guarantee a good time had by all.
Alte Schönhauserstraβe 44, 10119, Berlin, Germany; Web: www.pony-bar.de.

Tausend: Underneath a railway bridge, next to a grafittied wall, through an unmarked grey steel door lies Tausend, one of Berlin's hippest bars. Model-esq bar staff mix fantastic cocktails as you wait, rubbing shoulders, with super chic Berliners. Ja bitte…
Schiffbauerdamm 11, 10115, Berlin, Germany; Web: www.tausendberlin.com.

China Club Berlin: Bang slap next to the Hotel Adlon, the China Club Berlin serves up a great selection of drinks in an exclusive members-only environment. Call on your concierge to get you a reservation, the views of über-modern Potsdamer Platz, the Reichstag (revamped by Norman Foster), and the Holocaust Memorial are worth it.
Behrenstraβe 72, 10117, Berlin, Germany; Tel: +49 (0)30 209120; Web: www.china-club-berlin.de.

Victoria Bar: Über-stylish (it's picked up an award for best interior design), über-swanky, and über-luxurious, Victoria Bar is a great place for post-work / post-meeting drinks. The sofas are leather, the walls are wood-panelled and the music is upbeat.
Potsdamer Straβe 102, 10785, Berlin, Germany; Tel: +49 (0)30 2575 9977; Web: www.victoriabar.de.

Where to Dance in Berlin:

Rodeo: Forget your cowboy boots; Rodeo is one of Berlin's hottest night spots, popular with the likes of David LaChapelle. On Fridays and Saturdays party animals can get their kicks in the former Royal Post Office building. Rodeo can be tricky to find, you need to head through a courtyard and up some stairs to get there, but that's all part of the adventure.
Augusstraße 5a, 10117, Berlin, Germany; Tel: +49 163 162 0168; Web: www.rodeo-berlin.de.

Cookies: After 10:30pm on Tuesdays and Thursdays Cookies Cream, the vegetarian restaurant, turns into Cookies the über-chic night club. Like Rodeo, Cookies is unmarked and can prove hard to find, it's at the end of an alleyway behind the Westin Grand Hotel.
Friedrichstrasse 158-164, 10117, Berlin, Germany; Tel: +49 (0)30 2749 2940; Web: www.cookies.ch.

Berghain: Cited by some as "the best club ever", Berghain promises you and your clients a night to remember, if you can get in. You have to impress a bouncer known as the "Iron Man", and pass the "are you cool enough" test, but if you get through the doors it's all worth it. Be warned: Berghain isn't the tamest of clubs so if your clients aren't into all-out partying this place is best left off your Berlin itinerary.
Am Wriezener Bahnhof, Friedrichshain S.Ostbahnhof, Berlin, Germany; Web: www.berghain.de. 

Felix: Conveniently located in the Adlon Hotel, Felix is a slick, sharp club that attracts business travellers and the Euro elite alike. Every Thursday there's an after-office party that starts at about 7.30pm - perfect for client-friendly fun that won't necessarily leave you feeling jaded the next day. For other nights, check the online schedule as Felix doesn't run nightly.
Behrenstraβe 72, 10117, Berlin, Germany; Tel: +49 (0)30 301 117 152; Web: www.felixrestaurant.de.

Where to Spa in Berlin:

Club Olympus: Get pampered and preened in this oasis of wellbeing. Enjoy Far Eastern spa treatments, plus a fab pool, jacuzzi and sauna complex that will ease away any work-related stresses and worries.
Grand Hyatt Berlin, Marlene Dietrich Platz 2, 10785, Berlin, Germany; Tel: +49 (0)30 2553 1234; Web: berlin.grand.hyatt.com.

ONO Spa: White-on-white Zen inducing calmness at this spa in the Mandala Hotel. Max the bliss factor in bio- and Finnish saunas, the relaxation room, and on the treatment table.
Mandala Hotel, Potsdamer Straβe 3, 10785, Berlin, Germany; Tel: +49 (0)30 5900 51100; Web: www.onospa.de.

Experience Berlin:

The Reichstag: Scoot up to the top of the Reichstag's dome and you'll enjoy the best views of historic Berlin, which are particularly good at night. There's a roof garden restaurant where you can treat your VIPs to a glass of champagne or dinner. Last admission at 10pm, open until midnight. 
Tables can be reserved by phone on +49 (0)30 22 62 99 33 or by email kaeferreservierung.berlin@feinkost-kaefer.de.

Neues Museum: Check out Queen Nefertiti in all her glory. The iconic bust is one of the wow-factor exhibits at the David Chipperfield renovated and newly reopened Neues Museum.
Genthinerstraße 38, 10785, Berlin, Germany; Tel: +49 (0)30 26642 4242; Web: www.neues-museum.de.

Holocaust Memorial: Berlin's memorial to the 6 million Jewish victims of WWII is a stark and moving place.
Cora Berliner Straße 1, 10117, Berlin, Germany; Tel: +49 (0)30 2639 4311; Web: www.stiftung-denkmal.de.

Trabi Safari: OK, it's pretty kitsch, but if you want a client or team bonding experience in Berlin a Trabi Safari fits the bill. Cruise around town in a GDR icon, the Trabant. You have a quick Trabi control crash course and then you are let loose to explore the city. 
Contact Trabi Safari for more information. Tel: +49 (0)30 2759 2273; Web: cms.trabi-safari.de.

The Tiergarten: The Tiergarten was once a royal hunting ground, and is now an oasis of green flanked by important Berlin buildings, including Schloss Bellevue, the Federal President's residence. It is a great place to unwind and relax.   

Checkpoint Charlie: The Checkpoint Charlie Museum offers a fascinating insight into life in Berlin, on both sides of the wall, from the end of the Second World War until 1989. Checkpoint Charlie itself was most famous crossing point between East and West Berlin. Make sure you stop for a drink at the historic Cafe Adler, right by Checkpoint Charlie, which was where the Allies went to catch a glimpse into East Berlin.
Friedrichstraße 43-45, 10969, Berlin, Germany; Tel: +49 (0)30 2537250; Web: www.mauermuseum.de.

Where to Shop in Berlin:

Friedrichstraβe: One of Berlin's most famous shopping streets and home to swanky mall, Quartier 206 (Friedrichstraβe 71), and swanky department store, Galeries LaFayette (Friedrichstraβe 76 – 78).

Kurfürstendamm: Called Ku'damm by Berliners, this famous shopping street is the Champs-Élysées of Berlin; the long avenue is lined with designer shops, chic boutiques, cafes, hotels and restaurants. Make sure you browse the shops on Uhlandstraβe, Schlüterstraβe, Knesebeckstraβe and Mommsenstraβe, which run off Ku'damm. Also, check out Berlin's most famous department store, KaDeWe (Tauentzienstraβe 21-24), and the Kaiser-Wilhelm church (on the Ku'damm in Breitscheidplatz); the damaged tower is a symbol of Berlin's resolve to rebuild the city after WWII and a reminder of the destruction of war.

Konk: Fashion and accessories by local and international designers at this funky boutique in Mitte.
Kleine Hamburger Straβe 15, 10115, Berlin, Germany; Tel: +49 (0)30 2809 7839; Web: www.konk-berlin.de.

F95: Clothes, accessories and lifestyle products are on offer at this trendy Friedrichshain store. A great place for cool hunters.
Frankfurter Allee 95 - 97, 10247, Berlin, Germany; Tel: +49 (0)30 4208 3358; Web: f95store.com.

Whiskey and Cigars: If your business contacts are into the finer things in life then this is the place to stop off at in Berlin. There are hundreds of whiskeys to choose from, and cigars from an array of exotic countries.
Sophienstraβe 23, 10178, Berlin, Germany; Tel:  +49 (0)30 2820376; Web: www.whisky-cigars.de.

Photo Credits: Brandenburg Gate by Harriet Torry; Wiener Schnitzel (Lutter & Wegner) by u m a m i; Pony Bar by tim.la; Inside Berghain by ewar woowar; The Reichstag Roof by Merlijn Hoek.