We stayed a week. The apartment is large, in the old section of town, close to everything. Easy walk to the train station and every cafe or restaurant is terrific. They open late and close real late.
Host communication was prompt, self check in worked great, we were checked in after a few days. Perfetto!
We like the quiet, in the bedrooms where it matters, but the other rooms were fine for being in a vibrant city.
Bathroom is normal EU size, tight for us Americans but we quickly adapted. Internet was flawless but the massive building absorbs RF so there's no signal in the back bedrooms. That wasn't much of an issue, and the comfortable beds and big closet spaces made up for that anyway.
We felt incredibly fortunate to have found Nathalie's place.