I ended up writing a Tripadvisor review on my hotel in Paris and I felt guilty doing so, but I think I have been fair. It is a nice hotel. Just look at the views from the restaurant.
But it's not really accessible. Here's what I wrote:
This is a nice hotel. It's in a lovely location, with views of the lake and town centre, handy for public transport and the road network and the rooms are very comfortable and well equipped. Unfortunately, despite being advertised as accessible on several websites, it really isn't.
The room itself was great - large and comfortable with plenty of room for a wheelchair. There was a separate bed area which was slightly too narrow to access with a wheelchair. The bathroom, however, was completely unsuitable for someone who was non-ambulatory. Luckily, I can walk quite a few steps unaided, so could manage. The toilet is in a separate room and there would be no way to transfer from a wheelchair onto the toilet. The walk-in shower was good, but there was a step of about 20cm and no hand-rail. Transfer from a wheelchair would have been tricky and stepping in and out was bordering on dangerous.
The building itself is barely accessible. The main entrance is up approximately 20 steps, but there is a ramp down to a fire exit through which you can enter the lower ground floor. This ramp is too steep - I could only just get up it and I am a relatively fit user of a very light-weight chair. It was difficult to maintain control going down. It would not have been appropriate for someone with an ambulatory disability. The lift doors were almost exactly as wide as my chair (a 44cm frame with standard wheels on a 3 degree camber). A standard chair would not have fit.
All in all, I'd recommend this hotel, but not for someone with a disability.