Yes A Mermaid's Tale does have a heated pool. As a guest you can expect the pool heat to be maintained between 79 and 80 degrees F (26 C). NOTE: When the ambient temperature falls below 60 degrees F for more than 5 hours, the pool or spa heater may not function and even switch off. Pool and spa heaters operate ONLY when the pool pump is running. Residential pools typically run 6-8 hours per day only. Pools will be cleaned one to two times per week and pool cleaning schedules vary. In addition, spa heaters can only incrementally increase the temperature of the water 20-25 degrees F. Therefore, if the ambient temperature is 65 F the spa heat will obtain a maximum temperature of plus 20-25 degrees F or 90 degrees F for the provided example. Non-scheduled pool cleaning costs will be the responsibility of the guest.