In Makassar, I've stayed in Aryaduta & Four Points (within the same price range) and Mercure is definitely far better. It's an OK hotel; not amazing. But you get a room space & design that are more than worth it.
I like the complete amenities, the comfort of the bed, the working desks, etc. but since my room is in the corner, traffic noise is very bad. Not an issue for me but may be an issue for some. If you dislike police & ambulance noises, request a room not located in the corner.
The lobby & breakfast area is gloomy. Makassar's hotel guests are rowdy - cigarette burn stains even in non-smoking rooms, corridors sometimes cramped with personal belongings, and the breakfast area is chaotic. But the hotel does what it can.
All in all, probably one of the best below-1-million hotel rooms in the city.