Katia and Thomas are very responsive and helpful and their place is great if you want to spend a few days in Paris. It is quite small, but very clean and cosy. The biggest advantage, I think, is the fact that the place is in an inner yard, and thus extremely quiet. The stairs to the upper level (where the bed is) are steep and shallow. For a young person - not a problem. If you are older though, or not so nimble, getting up and down might be tricky :)