The place is cosy studio (30 square meters) with everything you need (kitchen, fridge, washing machine, internet, shower bed for 2, 2 sofas if you want to stay home with friends and chill.
Not so far form the very center of Paris :
20min by bus (line 81 - PC3)
10min by subway (line 13)
10min walking from Montmartre - 10min walking
The area is very cool, you can find lots of groceries.
Perfect for a couple for couple of days.