The hotel has 350 rooms, 20 of which are of superior standard. Most rooms have a sea view and most of them have two double beds. Extra single beds are not available. All rooms are equipped with air conditioning, satellite television, telephone, mini-bar, safety deposit box, balcony and bathroom with hair dryer. Some superior rooms also have an additional lounge, whirlpool and a terrace overlooking the sea.

The whole of the Aqua Onabrava has air conditioning and facilities include a hall, lobby bar, music bar, television lounge and other lounges with different capacities for meetings. There are six lifts and a restaurant with buffet style meals and show cooking. The hotel offers a fitness area 'Aqua-Fit' with a heated indoor swimming-pool, jacuzzi, sauna and aerobic room, along with other sports possibilities. There is an open air swimming pool for adults with a section for children, a garden with sun terrace and snack-bar 'La Pergola', public area and open air parking for buses and cars, although there is a private garage on request. The Aqua Onabrava offers activities for all types of guests, i.e., aerobics, games and sports, evening entertainment in the music bar, flamenco shows and live music. The entertainment programme also includes a mini club for children from four years old to 12 years old with a mini disco and games.