We had a nice stay at Yvonne's flat. It was good value for money. We didn't meet Yvonne during our stay but the communication was flawless and everything was handled very efficiently.
The flat is in a good position, just 15 minutes walking distance from the center.
It is a quite old flat but otherwise it has everything that is needed for a short stay.
If we had to find something that could be improved that would probably be the bed which is quite noisy when you roll over.