We stayed at Guillaume's apartment for a week with four people. It was very nice all over! Guillaume replied extremely fast to our messages in advance of the stay, the key handover worked perfectly and he was really friendly and helpful. The flat itself is perfectly located, clean, spacious (perfect for 4 people) and amazingly located (lots of nice bars and restaurants close, the canal around the corner and in walking distance from Gare de l'est). We had an amazing time and would definitely stay with Guillaume again. Thank you!:)