Great space, perfect for individuals, couples, or small families. Modern, clean apartment just steps from Invalidenstrass and the Natural History Museum, and just a tram stop away from the central station. We had no problems getting there, checking in, and heading out again. Plenty of storage space, and everything seemed to be in good condition.
The fold-out bed was a little small for both our kids (5 and 6), but we managed. If you're traveling with kids, be aware that it's a single open space, so you're either all going to bed at the same time or stepping outside if you want to continue chatting.