We had a bad experience here. Staff is impersonal, not friendly - and this is a family run business.
Issues: first, if you travel with elderly people or disabled, avoid! No accessibility.
Breakfast would be good, but the coffee is made early and let resting over a warm surface - when guests are served, it's cold. The facility has a espresso machine, we saw the owner having his coffee there, but we were not offered a hot drink!
The rooms are nice, but there are service issues. We found the bed linen kind of dirty, with other people's hair everywhere! Bad impression, disgusting.
There was no housekeeping service one day, with no further explanation or apologies. Cleaning service didn't wash glasses, or take trash away, for example. Bed linen and towels should be better.
And one last comment or advice: avoid the meals - they are too expensive for the local standards, and nothing special to justify.
I was sorry we didn't do proper research. It would be better to stay in Sedan. Bouillon is for just one or two days.