I came to Berlin with my boyfriend to visit the town for the first time. Friedrich's appartement was perfect and more than enough for two persons. We were welcomed by Sandro for the keys and he was here if we had any questions.
The appartement is well located, next to a bus/train line, in a really quiet district. We were at 10 minutes of Alexandreplatz (shops...). We really recommend this apartment ! Thanks for all !