End up here after a fiasco at the Hotel des Saints Peres down the street. The night clerk Jacques-Olivier was wonderful. We have an insider courtyard room It was marvelously quiet. We slept in an almost missed breakfast the 1st day. Typically we don't take the overpriced breakfasts in the hotels, but it was part of the (reasonable) package rate that we received in our late night check in (they could have gouged us, but they didn't -- they could not have been nicer). We ended up staying 3 nights and have a lovely time. The room was not large -- a (very comfortable) king size bed and room for a dresser a chair and some maneuver room, not much more. But the bath was large and modern and the room was perfectly comforable (you are probably not in Paris to spend all day in your room). The location can't be beat -- St. Germain is a great area to stay in, convenient to sights, bustling, but not overcrowded, hip, but at the same time understated.
The elevator is tiny (we considered sending our bags up alone). Use it with someone you want to get close to. And we had to take our bags up a 1/2 flight and down again to reach our room -- but this was minor. I can't say enough about how well we were treated.