The location is clean. But a bit overpriced. Only two public showers for all the rooms. The shower is immediately behind the toilet door entry without any privacy - that is quite strange. Also the owner could be a bit more friendly. Was in a big hurry. The walls are very thin, so you can hear everything what is going on in the other rooms. The wireless did not work in the evening - the next morning it was ok. For 70€ the night you can also find a hotel in Potsdam. The location of course is very nice - next to the big castle and also on a very quite street.
I had a really nice stay. Friendly welcome from Ralf. Nice new clean hostel in a perfect location to tour the historic sites of Potsdam, starting with Sans Souci which is only a short walk away. The fresh rolls at breakfast were much appreciated. I will come again
I really enjoyed my stay at Quartier hostel. The room was clean and lovely. The staff was friendly and helpful.