Overall we liked the studio, yet we have some points.
First of all, the flat we stayed in was not the one advertised here. The same building, but it was a different flat. Second, we believe the flat is part of student housing. As we were there during the weekend, there were a few parties going on and it can be quite noisy. Make sure to bring ear plugs!
The flat wasn’t superclean, we found a metro ticket (from previous renters?) in the bed and the floor was quite sticky. In terms of communication. Martin was usually quick to respond, yet we never got a response to our final message(s) with regards to the storing of our luggage.