German's apartment was about as close to perfect as we could hope for. It was the perfect size for two guests, with a reasonably spacious living room/dining area, a compact kitchen and bedroom, plus a water closet and pretty large bathroom, with just about everything you'll need to live like a Parisian.
Take a look at the photos in the listing - they are very representative of what the apartment really looks like. The apartment is not fancy, but it is clean, comfortable and tastefully furnished, with a bit of an artsy edge. I especially liked the striking accent paint colors on the walls.
Additionally, there is a large balcony that is accessible from both the bedroom and living room. We were there during a rather damp, cold week in January, so we weren't able to take advantage of the balcony, but I imagine it is a quite pleasant place to sit during the warmer months.
The apartment, which faces the rear of the building away from the street, is extremely quiet. I didn't hear a peep out of the neighbors during the entire week, and the only external sounds came from children playing in the schoolyard directly below the window - but it didn't disturb me at all, it was a joyful kind of noise, and it only lasted for maybe an hour each day.
The building is fairly new and the hallways and other common areas are spotlessly clean.
The location was terrific, and it was really nice walking along the beautiful canal to reach the front door. While the 19th arr. might seem far from the action, getting around Paris is super-easy thanks to the excellent Metro system. The apartment is located maybe 5 minutes from two Metro stations, and you can get just about anywhere in under a half-hour. It was extremely easy getting there to/from the airport - from CDG, there is a train that will get you to Gare du Nord in about 40 minutes, and then transfer to Metro Line 5 to Jaurès station.
There is a small organic grocery store on the same block as the apartment, and two full-service supermarkets are just around the corner. There are also dozens of restaurants, bakeries, and cafes nearby.
German was the perfect host. He provided detailed directions on how to reach the apartment, and everything went off without a hitch. He took the time to show us around the apartment and make sure we had everything we needed. He even brought us a box of tea and some biscuits, which was a nice touch.
My wife and I are possibly returning to Paris later in the year, and we both agreed that we would like to stay at German's place again.