Guest House. It was not 5 star in comfort, but at least 4 star in good, memorable experiences! One of those friendly places, family run, old villa. About $10/ night! For about $40-$50, you get a really nice place! Some of the hotels in Luang Prabang are luxurious, comfortable. Way better and superior in service than many $200 hotels in USA.
I am on budget + I do not care much about luxury.
It seems that every building in Luang Prabang is Guest House. If it is not a restaurant, retail store, temple or government office