Either before our visit or during, everybody was very helpful and took care of our concerns. The apartment itself was nice for the 3 day stay and basically had everything we need. Unfortunately it could been a little cleaner and the kitchen could have included some more basics, like eg cutlery. During the stay it was quite hot in the city and on the 13th floor you are not quite able to get fresh air into the room.
All in all, we were happy and would recommend it