I am not sure how many received the request for advice on establishing a gay backpackers hotel in Pattaya. My initial reply was I doubted it would survive. His answer was that gays and straights, male and female and married couples with children stay in Europe, in backpackers all the time.
That is a big change from his first request of gay backpackers.
But dormitory accomadation might have some possibilities.

I did a google search and found this site that were mixed dormitories
http://www.hostelworld.com/search?ci...untry=Thailand

Not sure if this price range is suitable. They start at 250 to 350 baht per night. Still with all the girls available all over Pattaya it might have a chance.[and don't forget the boys]