I spend close to three weeks at Hanspeter's place. I was there on work, and I found the place ideal as a "home office" --- just enough space, enough plugs, and enough kitchen for my modest needs. While the six flights of stairs (112 steps, I counted them for fun) may be a challenge to some (I took them as extra cardio), there is also an elevator. The neighbourhood is well connected, has many shops and restaurants. While the Eisenacher Strass station is closer, the Nollerdorfplatz station has more shops (groceries open 24h, 6 days/week), and better connectivity. Plus a wonderful market on Saturday. The space is not large, but is more than generous for one busy person with business to do.