Christian's apartment is practically perfect. It is spacious. Our family of three was able to spread out, and we were even able to have guests for dinner. The kitchen is efficient and well equipped - we cooked a lot, including meals made from produce we got at the nearby Marché Maubert (Tuesday, Thursday, Saturday).
The living area has enormous, beautiful windows overlooking a courtyard, so you have the best of both light and quiet. There are dimmable track lights throughout the apartment and lots of candles for setting whatever mood you like.
The washer and dryer worked well, and allowed us to pack lightly by taking care of our laundry each night. The air conditioner allowed us to keep the bedroom cool for our son who has autism and is very temperature sensitive. The separate bath and WC - though standard in Europe - make this a good setup for families. The satellite television includes music channels, which we enjoyed at the end of each evening with our wine in the comfortable sitting room. Also note: there are a lot of power outlets! Surprising for a historic building.
The location is optimal for access to transit and all parts of the city, with the Saint-Michel Métro/RER station a very short walk away, and the Châtelet Métro just a few minutes farther, on the other side of the river. Though the small area immediately around the apartment is touristy and tacky, you only have to cross the Rue Saint-Jacques to find the picturesque, welcoming Village-like atmosphere of the Latin Quarter, and the sophisticated boutiques and restaurants of Saint Germain are nearby in the other direction.
The Monoprix on Boulevard Saint-Michel is open until midnight every day except Sunday for staples and sudden needs. The cafe at Shakespeare & Co is very nearby and happens to be one of the best coffee shops in Paris.
Christian is an excellent host. He answered all our questions promptly, and met us at the apartment for an early arrival - our plane landed at 8:00 a.m., but check-in time is ordinarily 4:00 p.m. He keeps the apartment spotlessly clean and everything in working order, with good supplies of laundry detergent, dish soap, toilet paper, etc. He also makes check-out simple and easy - he is so accommodating!