I had a very positive experience at Juan's home.
I am a girl and I was travelling alone and I chose this stay because it seemed trustworthy and safe, and it was.
Although I didn't see Juan very much, in all our interactions he was very nice and we had a great chat at the check-in, where he introduced me to the home and gave me precious suggestions of places to eat (try the Kurdish sandwiches if you like meat, they're SO GOOD!).
At the checkout he allowed me to leave my luggage in the house from checkout hour (10:00AM) to the time of my flight, and it was very much appreciated.
It's worth mentioning that he was ALWAYS available through Airbnb text messages for any communication, everything went smoothly.
I always felt very safe and free to use the common spaces in the house.
Ah also, as mentioned in other reviews (but not in the description), there was a housemate as well, but he was also very nice and respectful. I think the housemate situation is not stable (this one told me he came in two weeks before my stay) so you might not find any housemates when you go.
About the house, the room is exactly like the pictures, and it was ok for my stay (3 nights), but overall there were some things that could have been improved, as other reviewers already noted before me.
The bed was not super comfortable and it was very noisy, and even if my room was very clean I cannot say the same for the common spaces. They were not dirty but not shiny-clean either, and the bathroom door's handle was broken, so it was a little complicated to close and open the door.
The location on the other hand is great! 30 min walk to the Louvre or the Centre Pompidou, about 1h to Tour Eiffel, but if you'd rather use public transportation (which is excellent) there are 2 metro stops from 2 different lines at 5-10 mins from the house.
The neighborhood itself is multiethnic and very lively but not particularly noisy at night.
Overall, if you are on a budget and you plan to spend a few nights, I think this is a very good option and I am happy to have chosen this host.