Guillame was very responsive leading up to our trip. Irena was as well, and was available throughout whenever we needed anything.
The downstairs room is accessed via a narrow, winding staircase, so keep that in mind if you have heavy luggage.
This is in the heart of Paris, so you can hear people walking by, and the metro in the downstairs room. It didn't bother us at all though.
Everything about our stay made us feel at home, and our trip memorable.