Andrei's place was accurately described and was just as it appeared in the photos. It is very well equipped for an excellent stay. The bed was very comfortable and the shower full sized.
Location was also very good. Easy walks to several U-Bahns, easy walk to Graben / StaatsOper / Schweden Platz.
The apartment is very quiet due to being on the inside of a courtyard.
If the number of people in your group matches with Andrei's apartment, this is the perfect place to stay.