The apartment was really nice in itself. It's really well located and clean.
It's a bit noisy as it's in the heart of the city, but that was not much of a problem for us.
However, even if you booked through Airbnb, they ask you by message to register on their Website in order to have access to the code that will open your room.
Unfortunately, the process didn't work as expected for us. During the account creation process, it told me that I should receive an SMS on my phone that I need to paste onto the website to confirm my phone number. However, never before in the process I had given my phone number. The phone number indicated wasn't mine.
I messaged them through Airbnb chat and they said I should call them to fix that.
By calling them they were able to solve it, the issue was indeed on their side. The person I had on the phone was very polite and helpful. But, as a foreigner, spending 20 minutes on the phone with the USA, cost me more than 50€ on my phone bill ...