Guillaume is a wonderful host. He is very friendly and willing to help you with your staying in Paris. The communication with him was very easy, and he let us leave our backpacks in the appartment during the last day, as we had our flight in the evening. He also recommended us several restaurants and bars in the area. Also, the appartment is in a fantastic localitation (25 min walking from Montmatre or Notre Dame, and several metro stations just 5 min from the house). We would repeat!