Kumomi Coast
This coast with a head-on view of Mt. Fuji is popular for its beautiful scenery, for its seashore footbaths, and for the Akaihama open air baths located a walking distance away. These hot springs are great because you are allowed to wear swimsuits, meaning that if you get cold you can jump straight in and warm up. Note that while there are showers and toilets, there are no changing rooms or other beachside facilities, so prepare ahead of time.