First of all, thank you Massimo for your host.
The apartment is close to everything, for example you can easily reach the Spanish quarter by walk, there is a funicular in the street and the metro station is near. The accommodation was the same as we expected, perfectly clean, there were some snacks for breakfast and Massimo was helpful.
Some negative things: The humidity in the room was high, so some of our clothes got slightly damp. We are not so tall but on the toilet we had a tiny space for our legs. In the kitchen there were no plates and there should be a litter bin. (It would be more comfortable if there were selective trash bins since the house has but we solved for ourselves.)
In sum, we enjoyed our stay here, it is perfect for a short holiday.