Is the pool at the LEGOLAND California Hotel or Castle Hotel heated? Yes, both the LEGOLAND California Hotel and the LEGOLAND Castle Hotel pools are heated to 80 degrees. 😊 Was this article helpful? Related articles What are your hotel pool hours? What Nightly Entertainment do you have? Do you have a pool at the LEGOLAND California Hotel or Castle Hotel? Can children be unaccompanied by the pool at the LEGOLAND California Hotel or Castle Hotel? Do you have a retail shop in the hotel?