Stayed in a one bed apartment, absolutely perfect for myself and partner. The kitchen was well equipt with everything you might need but to be honest we only used the fridge and ate out at the huge variety of excellent restaurants outside the hotels door.
Spa and Sauna were great, usually empty when we went down and provided you with robes and towels.
Location is beyond excellent within a stones throw are a train station,bus stop, tram stop, supermarket and plenty of bars/eateries.
Breakfast is great, boiled eggs, bacon, pancakes, breads, yogurts, cereals, hotdogs, cheeses etc etc
Internet is good value, 14.50 for 24 hours of usage which you can use on multiple devices. If you won't be using much then you can ask for "wifi passes" at reception which will give you one free hour. Signal is strongest in the lobby but can be used on lower floors.
Bar is excellent you have to go in for some cocktails!
You're in walking distance (5min) from Alexanderplatz and Museum island.More