Great and very smooth experience.
We didn't meet Mohamed in person but, from the chat interaction and a phone call, he seemed like a nice and easy going person. Very flexible regarding check in and check out. Despite our late arrival, he organized it so his cleaning employee could let us in and hand us the keys.
The apartment was true to the pictures, clean, comfortable, with everything you may need for either a short or long stay. For the detail oriented, the images were taken with a wide angle so it might seem a bit bigger than reality but it was still very spacious. Can comfortably fit 4 people with two the double bedrooms, and even 6 if you don't mind using the sofa-bed in the living room. Best of all, the location is amazing: only 10 min walk from the Duomo, 20 min max from all the main sights around the city center, and a supermarket accross the street.
Highly recommended :)