The hotel is well located in Berlin. The area has a lot of places to go to Bier Gartens and good restaurants. There are quite few trains stations around. One is literally in front of it which is very convenient if you need to go early in the morning to the Airport.
If you like to walk, is a nice 60 min walk to "down town" (Cathedral / Bandermburg gate).
Regarding the bedroom, it was enough for the purpose of the trip, but don't expect luxury, nor even a welcome coffee, or morning coffee!
The room was clean. However, on one occasion, it was not clean properly. They changed the towels but did not touch my bed sheets. They were just as I left them in the morning. The floor was not swiped, so I kept "moping" it in the morning with the dirty towels. Moreover, I was not lucky with the bedroom as it was beside the elevator and it was very noisy at night and early in the morning with guests coming up/down. So, I strongly suggest you to bring your earplugs to have a nice sleep.