The Hotel Luna Club (4-star) and Hotel Luna Park (3-star) are opposite wings of the same complex with shared facilities, so the pool is extremely busy and geting a sun lounger after 8am is unlikely/impossible! The buffet is therefore also very busy, although the standard of food was good and there was a wide choice. The gym is small and most of the equipment is broken, although there are bicycles available which you can take out for the day.
However, we would not rate Hotel Luna Club as 4-stars (more like 3-stars), given that we had to pay extra for a kettle in the room, and also a cot, despite specifying that we were travelling with an infant in the booking. In a true 4-star hotel, I would not expect any additional charges for using these items. At the least, these extra charges should have been highlighted in advance. Finally, the air conditioning in our room did not work properly throughout the stay, though we may have been unlucky, and as the hotel was at full capacity, we coud not change rooms.