My wife and I stayed 5 nights. The studio was nice and clean and had all the amenities required for the simple purposes of shower and sleep. We didn't require it for anything else (such as cooking or ironing) as we were out and about. There is a stove top, iron, a fridge and a fan. The fan was sufficient to keep air circulating and the studio cool (summer temperature outside was between 20-27 degrees).
On that note the biggest winner is the location. Its sits bang centre of Le Marais and therefore everything is within 2,5,10, 15- minute walk. 2 minutes to cafes and clothing boutiques, 5 minutes to up-market restaurants, 10 minutes to metro, 15 minute walk to Latin quarter/canal st/bastille, 15-minute ebike ride to Eiffel tower.
It's a Parisian studio, so the size is Parisian (aka don't expect to be able to "swing a dead cat around"). It also sits 3 flights up. There is a lift, however it was being fixed while we were there. Needed the climb anyway to burn off the croissants.
Highly recommend this studio for travellers who are just looking to lay their heads at night or hit the clubs. It's the heart of the LGBT scene here - so bars and clubs are just a whoop, whoop door step away.
Host was accommodating and responsive. Will stay here again next time.