Guillaume has such a charming place! The apartment is small and intimate, but the space is set up well, and the sofa bed is very comfortable. The space would be ideal for a solo traveler or a couple, but my cousin and I were quite comfortable even though the quarters were close. The location is perfect -- on a bustling street with lots of cafes, bars, and restaurants close at hand, and many of Paris' tourist attractions a mile walk (or a short metro ride) either north or south. The apartment itself is off of a beautiful quiet and peaceful alley secluded from the activity outside.
Guillaume was a great host. We never met him in person, but he was in touch with us throughout our week-long stay and responded quickly when we had questions. Needless to say, we enjoyed our stay in Paris very much. We would definitely look forward to staying at Guillaume's place again the next time we travel to Paris!