Beach is outside of hotel (not controlled by hotel). Several ones to choose from, including taking boat (was included in price of the room) to peninsula across.
Back few years ago all beaches were public, with some optional equipment for rent.
You could of course take your towels from room for free.
At the time there was no pool, so don't know about that, but expect all is included for guests (that's normal setup). Suggest you call them via skype or send mail in case they don't describe it on web page.
All the best and sorry for such delay in answering, maybe you already travelled and can tell me how it was :-)