Grotto Spa is located at Castaway Bay in Sandusky, Ohio. Grotto Spa is an indoor/Outdoor hot tub that opened with the park in 2004. Grotto Spa is great for relaxing. The water is about 100 degrees and feels very warm! There are jets that you can sit by that really help you relax. Grotto Spa is a great attraction for guest to enjoy!
Last Updated: 4/21/2018