We're a french family who travel with 3 kids (9 and 4 years old + 20 months). Wolfram's appartment was great for us: it's small but we were always outiside and for the night it was just what we need. Wolfram is a great personn, you can join him if you need. The neighborhood is calm but you can find restaurants, supermarkets, bars in the street.
Our kids slept together in a bedroom, we were in the principal room with my husband. The shower is between the little kitchen and the main room, so if you're travel with friends, you have to close the door for intimacy but for us, it wasn't a problem :).