Mathieu is a great host, and his flat is a wonderful space, sited amazingly central in Belleville. In every way, I was glad for my stay in the flat itself: nice flowing space, clean, quiet, with great daylight, and very convenient for walking and metro'ing to all. BUT as noted in prior comment about 'Communication': the VERY bad situation of poor communication by Luckey made the stay end on a VERY BAD note: i.e. being locked-out of the flat late at night, and stressing that i could not get a night of sleep inside, and get my suitcase+passport to fly the next day... All of this being due to the (avoidable!) error of Luckey. That alone, is enough to make me not want to stay in a Luckey run property again. Makes it hard to want to refer to others this otherwise lovely flat + very nice host . As noted prior. I had read Emma's review, and thus asked Luckey (before arriving, via email!) for keychip to avoid lock-out after 22:00 , and then i was told by Luckey that i did not need keychip ... Yes, i was (wrongly) told that doorcodes (x2) and the key was all i needed. They are NOT. It was only AFTER i was then locked out that Luckey got their info correct: Too late! The nice stay was spoiled, ending on very stressed state. Luckey will NOT help you when you are locked-out late at night - even tho' it is their fault they did not give you the keychip. You WILL sleep on street or have to pay a hotel. You will also not get refunded for that night of lock-out even tho' it is due to communication + managing error of Luckey. In short: Make sure you get the keychip no matter what - or find another flat to begin with that is not managed by Luckey. It's a really nice flat but lock-out is not worth it.