Asia - Good Beach in SE Asia in June?

Taking a trip to SE Asia next month and looking to spend a few days at a beach destination. Looking for a decent to nice beach, not completely isolated, cheaper the better, decent food nearby. I would like the beach to be swimmable, I read a lot about beautiful beaches where people don't go into the water due to jellyfish.

We're open to any accommodation, I'm willing to spend a bit extra on the hotel (like Hyatt, Sheraton, etc...nothing too over the top).

Very flexible on where we go as we'll be burning some star A awards for intra asia travel.

Thanks for your ideas!

The best beach I have found lately is Ngapli in Mynamar. This place is out of this world, I have never seen sand or clarity of the water ever this clean. If you need an address, check out Amazing Resorts. In Vietnam we stayed at the Hyatt in Danang, a new development which was just opened when we arrived on their doorsteps. Then, it was half ready and lacked soul, lacked everything else too, but friends have written that they have their act together and have even put on a shuttle service to Hoi Ann, which is beautiful. This place had so much promise, when it fires it will be brilliant. I loved the beach places around Kampot ( remember the pepper) in Cambodia and an Australian couple have opened a charming island resort, which you would love, it is called Song Saa. Other than that I have always enjoyed the colonial architecture and food of the Penang Island, I spend as much time as I can on the island of Bali which is heaven on earth all year round

Bali is in dry season in June. A lot of SE Asia north of the equator isn't.

For cheapest and not too isolated I recommend one of the resorty areas in Thailand or Vietnam. (VN will be cheaper.)

Phuket for example in Thailand, you have your choice or resorts, some excursions and a town center to play and eat.

Hoi An in Vietnam is nice, not nearly as developed as Phuket, but there's a nice quiet beach with some hotels and there's also a touristy town center with delicious food. When I last went a couple of years ago, they were also building up the resorts in Danang, but those are more self-exclosed. The Hyatt is one of them I saw them building, there's other like the Crowne Plaza too.
http://danang.regency.hyatt.com/hyatt/hotels-danang-regency/index.jsp?null