What a wonderful place to stay! This apartment is sparkling clean with a brand new bath and kitchen. The bed was comfortable. There is a small tv but we never turned it on. The kitchen was stocked with plenty of cookware and dinnerware as well as all the "extras" like salt, pepper, sugar, oil, coffee so we could buy basics at the grocery like eggs and baguettes and have breakfast in.
The apartment overlooks a courtyard and the building feels safe. The apartment is small but the layout makes it feel much larger. It is on a narrow street with a grocery half block one way and a Starbucks a half block the other. The street and the building have a fascinating history--be sure to look it up.
The Le Marais area is lively at all hours. There are cafés bars and restaurants everywhere. A couple of blocks away is a huge metro station/shopping mall/cinema/a hundred other things. From this station you can get directly to CDG as well as everywhere in Paris.
Some reviewers have mentioned noise at night from a nightclub across the street from the apartment. It seems to be closed now. Even though the neighborhood is hopping all night, being in the middle of the block on a narrow street blocked out most of the crowd noise.
Joël is a perfect host. He accommodated our request for an early check in and got back to us in minutes the couple of times we contacted him. You can tell that he puts a great deal of thought into making his guests feel welcome and have a good stay.
If I get back to Paris, I'd never stay anywhere else.