The Le Marais region is fantastic and apartment close to everything. However the road was very busy and lots of noise at night times. Apartment so pretty with lovely decor and very clean. The view from windows was beautiful. Check in was very easy but suggest calling them on arrival to alert them you are downstairs.
Be aware there are 4 lots of stairs that are so steep and not easily managed with a large suitcase. Also second bedroom is really a small attic and more a 1/2 room. Beds are quite hard. I think this apartment would be quite hot in summer as only small fans in bedrooms and beds close to roof. Unfortunately we did not sleep well which did affect our experience.