It's not 4 star. Beautiful photos when book. But in real bad area. Personal wanted to change my money for her couse to take benefit. This is not so clean hotel. Good, what free transfer to a plage. About price I think it's not expansive for Dubai, but Mercury is European hotels, it must be good quality as in Paris Mercury : very clean, good areas, good personal, everyday change bed as accept for 4* hotels.
Great hotel. Pleasant and unobtrusive staff. It is very beautiful everywhere, the room is incredibly comfortable. I liked the attention to detail: we left more bags of black tea when we saw that we were drinking more of it compared to green tea. The service is at a high level. The hotel provides free transportation to the beach at certain hours.
In the end, however, we had a hitch: they counted the laundry for us, we did not order such a service, and we did not leave our things for this. We sorted it out at the end, when our transport to the airport had already arrived. But they sorted it out.
It was also unclear about towels from the pool: at the reception desk they said that from there you can take towels to the beach, and at the pool itself, that only to the pool.
These moments still did not spoil the overall impression, 5 stars.