I will start with the positive: The apt's location is excellent. The communication before arrival was good and clear, and it was easy to collect the keys and access the place. The apt itself is great, in good conditions overall and very comfortable for a party of 6.
Now to the negative part and the reason I will not come back to this place or recommend it:
The company that managed the place made a mistake and double booked the apt. We checked in late in the evening and soon after, someone started buzzing the intercom, and later the door said they had rented the place. After asking them to leave, we went to sleep. When the company manager showed up at 23:30 without ringing or announcing himself, he got himself in when we were all sleeping (here were a 70yrs old and a 4yrs old in the apt). We all jumped with the noise and started yelling. The manager realized he had made a mistake and left the place.
During the night, the boiler started making banging noises so we couldn't sleep the whole night. The next day, a plumber checked and concluded that it was required to change the boiler but advised that we could turn off the boiler at night to avoid the noise. The next day the manager called asking if the plumber could come on Saturday to change the boiler, to which I answered NO! (we planned to be out all day, and I didn't feel comfortable having someone in the apt where there is no safe box). Surprisingly, when my daughter and I were getting ready to go out, out of the blue (again without ringing), the plumber got in the apt on Saturday. At this point, I got annoyed (I lost it a bit) and started yelling at the manager, who began coursing me back in french (really lovely of you).
After our first night, the manager promised us to get reimbursed for that night that we couldn't sleep and for the incident, but obviously, he didn't do it and didn't reply to any of my messages.