Apartement is small but nice. Probably a bit too small for four adults and a bit noisy during Friday and Saturday nights but we sirvived. A small bathroom can be a challenge for a tall person :)
Location - a bit far from a city centre but very easily to reach with public transport that is very near Davids apartment (bus, s-u bahn, taxi etc.)
The area is nice and quite - small and cosy cafes, bars, restaurants all around. Hellmann & Klee is a MUST! 5min walk from the apartment and you will experience a total explosion of tastes in a combination of quality products! Thanks to David for the recommendation!