We stayed here with 3 friends in total, the appartment is super spacious for this and can definitely take 4 guests!
The appartment has a good airco which helps a ton when it's hot outside. It must be said that the location is also in a street with a lot of bars and that is very lively during the night. BUT the windows are super isolating the sound and you can barely hear anything eventough the street is very crowded. So that was definitely a positive thing!
The small terrace is also lovely for that one person of the group who wakes up early and loves a relaxing breakfast with a beautiful view in the sun!
The location is nearby a small carrefour express which gives you access to the basics, 11 min walking for a big carrefour and about 5 for a big italian supermercatti.
You walk about 4 min to get to the m1 metrostation which takes you to all the touristic spots in at max 15 min with great ease and very cheap (12€ for 3 days)
Would definitely come here again!