I stayed in Mathilde's apartment with my boyfriend for 4 nights and we absolutely loved it. Mathilde was on vacation when we arrived so her friend let us in and gave us the tour. It was super clean and cozy and really felt like home. The apartment had everything we needed—a place to sleep, plenty of room, clean towels, a shower, a fridge, and a washer (which we didn't end up using). The location was great, right on the Metro and walkable to all the main sights in Paris. I don't think we could've stayed anywhere better!