I stayed here for a conference in May 2010 for a week. This hotel grew on me (although I wouldn't call it a five star). It's set up like a lot of resorts, with a main building and the majority of rooms in outbuildings around it. I was in one of these outbuildings, on a ground floor room. I wasn't too impressed at first, but the room had plenty of space and a nice private veranda. There's a decent number of cable channels on TV, and most important, a safe. The directions for it are really confusing though, so don't follow them, just set it and use it like you do other hotel safes. The bath-shower is in a different room than the toilet and bidet. Lots of closet space. The double bed is two twins put together. Air conditioning took a little while to get going, but when it did it worked just fine. The one issue was that the "about the hotel" book didn't have any phone numbers in it. I didn't get room service but a colleague did and said it was very good.
The grounds are really nice. There's a pool that's like a fountain where most people seem to lounge, and I think maybe it's heated, but I didn't go into it. Lots of loungers around it and they played music, everything from Eurotrash pop to 1980s Will Smith. Then there are some nice flowers and canals, and a lunchy sandwich place, a rectangle unheated pool that is mostly empty but was great for swimming laps, and then down to the beach which was also very nice with lots of chairs. Flowers carpeted the grounds as well - very nice! There's a fitness center but as I swam laps I didn't go there. In the main building is also a bar (there was a belly dancing show one night!), a gift shop that sells mainly beach things and knockoffs of designer things, and two restaurants, a nicer one and the buffet. I had the buffet for breakfast and lunch, it was good - breakfast had a made to order omelet and crepe station, and lunch had a pasta bar. There was a ton of variety with foods from at least three continents on offer, plus the usual salads, olives, breads, etc. I have to recommend the turkey - I thought it was odd that it was served so much but it was fabulous - it's nothing like North American turkey.
Mostly people speak Arabic. If you don't speak Arabic, the second choice is French. Communicating in French was fine, but their English was definitely limited. That said, there was a definite desire to please on the part of the staff - including when I had a leak from above in my water closet, and they came and fixed it almost immediately. The hotel is set a little ways off the main drag, so it's about a 15-minute walk to the marina area with the shops and restautants.
I'm not the biggest fan of the Yasmin Hammamet area - I think there are better places to go in Tunisia - but if you are going to go there, I recommend Le Royal.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC