The appartment has a good location, it's clean and convenient.
The communication was good !
There was a few problems though, the internet can be very unstable. At the begining, for the first few days, it was catastrophic. Extremely slow, and would go on and off all the time. with insane spikes on the ping. Then it got slighltly better after I contacted them (after a few days waiting). It's fine for simple use, like administrative stuff and simple video streaming but if you need a high speed internet that is very stable then that might become difficult.
On the previous day of my check-out I asked to check-out later, which they kindly allowed, but on the day I had to leave I suddenly got locked outside the door, the code to enter the room wasn't working anymore. They resolved it in more or less 20~ minutes, thank goodness I had my phone with me.