Frank has great communication. He responds very fast and thinks along. For instance, we let him know that we would arrive sooner and asked if it would be possible to check in earlier or leave our luggage. In the early morning he said it wasn't possible but when we arrived an hour earlier the apartment was cleaned already and Frank let us in straight away!
The apartment is clean and provides you with the basic necessities.
We were struck by the noise of the heating installation in the apartment though. Eventually we found a switch to turn it off, but we don't think we were meant to do that. Also it's good to know that you're on a busy street next to a cafe with music till late. For us it wasn't that much an issue, but still good to know before you come there I guess.