Ciel Spa is the spa of SLS Cancún, a hotel in the Puerto Cancún marina district at the north end of the hotel zone. The hotel lists herbal steam rooms, experience showers and a relaxation lounge. Adults who are not staying can book an 80-minute guided hydrotherapy circuit with a sauna, aromatherapy steam room, cold plunge pool with ice fountain and thermic loungers, on its own or with a beach day pass or massage.