Car park : 500 yen 

Pubic shower and Toilet : Yes

Life Guard : Yes

Beach restaurant : Yes

There is swiming pool called Aquasian just next to the Ashiya beach.

You can get in and out from beach and pool.(Entree fee is 500)

Futher information please check it from here

A safe beach and a lots of fun for kids at Aquasian.

Car park : 500 yen

Public shower and toilet: No 

Beach Restaurant  : Yes , You can take a shower in there.

Safe beach for kids.

Water is very clear.

Car park        :500 yen (All day)

Public shower and toilet : Yes

There is no beach house restaurant or shop.

Water quality is highest AA class.

Bus stop : Yes

In Japan we don't have such a culture to be nude at the beach.

However, I know the beach that you can be Nudy and won't get seen from many other people.

You can only access it by Bicycle.

There is no car entry to here and it's too far to walk here.