For me, service is tremendously good. People are friendly and helpful. Breakfast is wonderful, it was worth to spend. Location is nice. Not new or clean as photos, but absolutely the employee of the hotels are as you are in good hotel.
However, all were spoiled with toilet or tap water flow. Toilet flushing is as you are in mid of 20th century to flush 10 times or more. This is not only our room, even the toilet in ground floor. Shower is fine, even not strong but at least fine. I don't understand why showers are fine but toilet is not. Usually opposite.
Anyway, if you are alone, it won't be problem. But we stayed as family, and not only one night, we were really stressed a lot when we need to go toilet. The flush doesn't clear up easily, and you need sweating work even you are in hot summer.
I would doubt the hotel managers are taking too much salaries or the owner is stingy. Anyway location is good, employees are fine, and under Mercure brand, so people will select. But indeed, this hotel should not name as hotel. This is before to let people stay in the room. Change it.