As many others have said this is a very clean, well located space, and I would happily return here. The building felt secure, the stairwell was bright and fresh, the street felt safe, and was quiet all the time (except one night drunk tourists but I think there had been a football match). Really easy walk into the centre, and lots of restos and cafes nearby. Cafe on corner 20m walk had really lovely pastries and friendly staff, very low key.
I liked the mezzaine bed (with a wardrobe) and enough space for 2 people's suitcases/bags. A few more hangers would have been nice. Could easily have a 3rd person on the sofa as there's quite a lot of room in the living area.
In the day the flat is bright, but has shutters to keep out light/heat in the middle of the day, and there are also blinds on the upstairs windows. The interior lighting was good if you were trying to read in the evening.
Good quality thick clean towels, shower gel and handwash. Shower is nice and big, although bathroom is quite small. Everything was pristine clean.
Just to note there's no microwave for quick heating of food, and no iron (although there's an ironing board which made me chuckle).
Sheets were thin and had holes but I've mentioned this to the host - I appreciate that the host may not know this unless someone tells them.