I stayed for 5 nights over New Years Eve 2012. The hotel is modern, with carpet free rooms and little noise. There was no smoking in the rooms or lobby. My room was a soothing blue, with an iPoddock, a great tv and a very comfortable bed. It only lacked wifi in the rooms, which I was told would be added some time in 2013.
The hotel is very close to the Tiergarten and have the Nordic Embassies across the street. It's a quiet area, but you're close to everything. Either you go on foot to Ku'damm, or you jump on the bus 100 right outside and go to everywhere else. Less than 10 minutes walk to the Zoologischer Garten Bahnhof.
The staff are friendly and speak English too. The breakfast is good, but maybe lacking a bit if you have special dietary needs. The hotel restaurant had some delicious dinners. This hotel is great for anyone who doesn't need the nightlife right outside. Would stay there again.More