I had a great stay and would recommend Claudio's place.
The location is great, right in the city centre and easy to walk to most places. Despite this it is very quiet so you will get a good sleep. As it is a basement flat there is not much natural light.
Claudio was very responsive to messages and his wife Laura stayed up after midnight for the check-in when my plane was delayed. I also had some minor issues and she came and helped with these and was very helpful and friendly throughout.