Pierre's apartment is absolutely central and definitely saves time and costs, since lots of beautiful places and sightseeings are of walking distance. You step out of the door and you find numerous cafés, restaurants and supermarkets. In the evenings - especially at weekend - it can get loud though. That's probably the price you pay for staying so central – Paris is finally a lively metropole. Since I was there for work and had to get to bed early, I used ear plugs and everything was fine. The apartment itself is of pretty comfortable size - especially for Paris. It has a separate, fully equipped kitchen, which I was very grateful for and a very good bed mattress - very important thing, if you're out all day!
Personally, I appreciate it a lot when the host isn't some anonymous company making use of the already tight housing market but someone residing there. Pirerre's apartment is his home, a daily used and cosy place, where not everything is new and polished, but truly has the atmosphere of a home.
Pierre himself, whom I shortly met, seemed to be a very nice and easy-going person, accessible for questions and informations during my whole stay. Thanks, Pierre, I pretty much appreciated that.