Avoid this place. After checking in, we went out for some food and found another group of travelers in the same apartment when we got back. It took more than an hour to sort out that one of the "Merveil" employees had screwed up in the information they sent. To "make up" for this, they brought us a couple of bottles of cheap fruit juices the next day...
Then, the place is EXTREMELY noisy and any conversation in the common parts can be heard loud and clear. There is also a constant vibration caused by the subway below the building. The apartment barely receives any light. The very few windows are all on a tiny interior courtyard. Finally, before the booking is fully confirmed, they keep asking you for more information, extra security deposits, etc. This makes the whole booking a real hassle and far from the usual AirBnB practice.