The hotel is a little tired around the edges but is generally clean. The staff are friendly and the breakfast is adequate, although the room is tiny so you can find you have to wait for a seat. Didn't affect me as I was not in a hurry so went down after 9am.
Easy walk into town centre where there are a choice of restaurants, although fewer open in September.
Carnac stones are a short distance away.
My bedroom was a decent size with a good bathroom, apart from the bath plug would not open using the lever. Bed comfy, I slept well.
Be aware, Carnac has a market in the large car park across the road. This can mean lots of traffic early in the morning. Ask for a room at the back if you are a light sleeper. Otherwise, enjoy the market.