Xavier was helpful and kind all the times, even in a case of my dumbness. The apartment is a tiny cozy place in a rather quiet zone of Paris, and we felt really at home, comfortable all the time - even though there was much noise on the near Rue St Antoine due to sidewalk repaving!
The place was clean and complete: the bathroom, even if really tiny, was comfortable enough for our 5 days stay.
I can surely suggest this host and this apartment for young couples, but also for expert voyagers which don't mind staying in tiny places. Maybe even a couple with a child could use this with little to zero worries. Surely we will check again Xavier when we will come back to Paris (and we will).