We stayed here in December for New Years. We chose the place as we were staying with a friend and our own little family. Two bedrooms, a nice bathroom - the little first floor was really nice and warm, which was great in a December as it was very cold this week. Very nice combined living room and kitchen, great with some space especially when traveling with kids. Living room is a bit colder - but wasn't bad - December was just very cold.
Lea was super friendly and communicative. Her mom came to open up as we arrived late and Lea had left town.
The place is end of line 4, so well connected but also need a little time to get into the center, like 20 min. But definitely worth it considering the space we got.
Montmartre is close, a 15 min walk but with quite some stairs. That was a nice area.
All in all, great! Recommend it!