I would also vote Olu Deniz, I went there first & LOVED it.
The Belcekiz Beach hotel IS NOT THE ONLY BEACH FRONT HOTEL, The Olu Deniz Resort Hotel is right beside it equally beach front, but the beach is wide & then there is a grass area (like a tiny strip of park) then a pedestrainised road, THEN the hotels butt up to this. Sounds furthur than it is, LOL.
I've stayed in the Olu Deniz Resort hotel twice, I pay extra for the sea-view rooms (up the mountainside!!!), if you have young children, or are elderly or have any sort of walking problems these sea-view rooms are not for you, but if you want peace & tranquility they are fab & MUCH bigger than the normal rooms.
There is one other beach front hotel in Olu, the Oyster Residence, but thats B&B and quite expensive. As owned ny the White Dolphin people, who are creating a hotel where the White Dolphin was, now that will have FAB sea-views when built!!!!!
Go to Olu, you will love it