There was a collegue of Riad at the appointed time to let us into the room. We could leave our luggage in the appartment while the room was getting finished cleaning (~30min).
The appartment was nice and clean and could easily accomodate the four of us.
Only thing is, you should be prepared to bring a few things on your own. The kitchen is sparsely equipped, so don't expect any spices or something like that (sharp knives...).
The location is also good to explore the city. We managed to go everywhere by foot! We really enjoyed our stay and would definitely come again.