In total, the stay in Mounnah‘s room was ok.
I wouldn‘t recommend it for a long stay, though. For a short stay where you want to have a place to sleep and be out all day exploring the city it is okay I think.
The room was clean and it was good having the shower in the room. The toilet was shared with the other guests on the floor. It was clean enough.
As others have already mentioned the walls are thin and you can hear everyone on the corridor and on the streets. You hardly see the other guests, though.
There is not always someone there from the staff but you can catch them at some point. They were flexible to arrange for someone to let me in when I asked to check-in earlier.
The staff was polite and helped when asked. But they weren‘t really cordial or welcoming.
The immediate neighbourhood is not a touristic one at all. You have a lot of small stores with everyday life stuff. There is a small park nearby and behind that within walking distance (when you get nearer to the Sacré-Cœur Basilica) there are a lot of nice cafés and brasseries where you can have a drink or something to eat.
Two metro stations with different lines are quite nearby as well.
As it said in the description for the room there is neither a kitchen nor a fridge. Around the corner there is a place where you can do your laundry with tumble-dryer as well.
There is wifi but sometimes especially in the evenings it was very slow.
So all in all, I would not recommend the room for a long stay if you can afford something else.
But for a short stay where you only need a room to sleep it is a clean place with everything you need nearby.