We really enjoyed our stay at La Maisonnette! Check in was easy and we greatly appreciated being able to check in several hours early. The place is really nice and had everything we needed, including A/C. Plus, communication was great -- they notified us immediately to a metro strike happening the day we arrived.
For other travellers -- there's a bakery just across the street and a supermarket and metro stop just a block away. The apartment is on the ground floor, but inside a closed off courtyard that you need a fob key to access. It felt safe and secure. It's in a great location near Le Marais, but very quiet. We would definitely stay here again!