I stayed at Alex's place for a month and a half and had a really nice stay. It was cozy and sparkling clean, and I really enjoyed lounging on the couch watching the huge TV during my mandatory quarantine. Kitchen was great, bathroom was SUPER nice, I loved having an elevator and a 24-hour concierge, and the apartment was warm and comfortable all day. As others have noted, the location is also prime — it's tucked away from the bustle, but really close to Rosa Luxemburg Str, and Alexanderplatz for transportation, etc. Alex the host was really nice and very communicative too. Really everything was perfect and I highly recommend it! The only caveats being that a) if you don't like soft mattresses (I love them!!) the bed here is extremely soft, and b) I was not expecting that a building was being built right outside the bedroom window. This won't bother early risers at all, and it wasn't an issue every day, but for those who sleep past 730am, it might necessitate earplugs on some mornings. Luckily it appears to be almost finished, so I assume that in a month or so this will no longer be an issue — ask the host to advise if you're worried!