Hi allizza, I know lot of philipins who work at Yangon or mandaly or other city in Myanmar, and normally they accommodate by school authority. And of course free electricity bill and free wifi.
Regarding visa, you can get 6month visa, but staying period not over 3month, so each 3 month you have to out of Myanmar and enter to myanmar, and from any country you can apply for Myanmar visa its very easy, normally they visit thailand, Singapore etc. And the expanse schools authority provide.
If you would like to know more in detail you can ask any time.
Best of luck.