Very nice place for visit and feel Berlin. Great location, you have all kind of public transport in up to 5 min walk distance (10 if you with kids).
There is a lot of food places and shops in area so you'll always find what to eat or groceries. Functional kitchen with oven, microwave and electric stoves (we made full use of it since we were with kids). The place isn't childproof but to be fare it wasn't mentioned as one.
There is no free parking space next to it only paid but free parking zone starts in couple blocks off it (Ivo and Mike make great instruction where to go). They definitely responsive and will explain everything you need to know.
There is hard cold floor so consider some slippers. There is some carpets but not enough to be fully barefoot (been there in February).
The place is off the main street so pretty quiet outside. A bit noisy from above (there is probably children and we heard them running) but nothing unbearable.