Even if we have had a little problem to get the key of the appartement at the frontdesk, Maria was really responsive to help us sorting out the problem. Finally, it did not bother us more than that.
The flat is exactly the same that the one on the pics (and there is a small balcon). Small detail but quite important when traveling: a sponge and washing up liquid ;-)
The emplacement is also quite good. Everything may be done walking. I have used only metro to get in and out of the city.

If you are reading this, I will defenitely recommend to stay here.