The apartment in the heart of St. Germain was perfect for us- my husband and I stayed here with our 5 month old baby girl. Excellent location- walk out your front door and you are in the heart of St. Germain, very close to the Metro, better yet walking distance to many major sights like Pont Neuf, Saint Michel, Notre Dame and the Louvre is just across the bridge.
The flat was very clean (important to us), the bed was big and comfortable, and we thought it was a good size for a studio. Because we have a little baby we really liked that the kitchen and main bathroom were separate rooms, so we could cook in the kitchen without waking the baby. We didn't meet Leo however communication was excellent, we appreciated her suggestions on travelling by train, and a big thank you for booking a car to travel to the airport. Great experience, we would certainly stay here again.