We spent 4 nights at Slimane's apartment and the experience was perfect! We found the apartment to be exactly like it is shown in the pictures; spacious, clean and comfortable.
The location is indeed great. Most of the sites are within a walking distance, and there is a metro station right at the end of the street.

Slimane was very attentive and helpful and replied quickly to all of our questions.
Checking in and out of the apartment was also very easy;
Slimane's brother Hakim checked us in, he even met us at the metro station and escorted us to the apartment.
Slimane's brother Moncef checked us out exactly at the scheduled time.

We highly recommend the apartment, and we hope that next time we are in Paris we can come back to his apartment again!