Cannot provide any suggests on Open Door Hotels in Thailand.
But some 53 years ago I spent a Summer in Chicago and stayed at the Lawson YMCA.
No Air Con, so you had to open your Window and to get a "breeze" through the room you had to leave your Door slightly ajar...
Men would prowl the halls at night and reach in though the slightly open door and flick on the room light. Just to get a peek.
Most disturbing!!! HAHAHA
I much preferred the Gang Showers. The water was running in those Day and Night.
So hope you have a good time at the Barracks!!!