The communication was very easy and so was the check in. The emplacement is great and the room #4 was very spacious.
The only thing is that it can get quite busy in the place as there are many rooms and lots of people coming/leaving almost everyday. It might not be the best if you are looking for a very quiet place (ex there was a kid for a couple days during my two week stay and he was very loud)
The apartment is as described, it has effectively four floors but this was no surprise.