Alex's place is not very big but very smart designed, and everything is there to enjoy Berlin. I stayed there for a week, traveling alone, and really enjoyed the studio. It's in a real Berliner neighborhood, so nothing posh or too polished. Just the famous mix of young people, "multikulti" ah yes and the occasional Schnautze (look it up) when the pre-gentrifried inhabitants will see you hassle with your trolley suitcase :) Would recommend if you look for a real city experience.