I stayed 3 nights in Tatjana’s place and I really recommend it to solo travelers like me. It’s next to a U-bahn station and bus stops going to Museum island and the airport with a night bus. You can walk to east side gallery just by crossing the river. The bedroom is big, with nice plants and big windows. Tatjana is very friendly and answered all my questions and requests. Her two cats are very nice to me as well !