Back in 2009, before there were any local hotel listings, I had made a list of local hotels for this blog, with with the help of Martin. There were only a handful at the time.
These days you can't count them on two hands. I imagine occupancy rate is quite low with a few exceptions. My opinion is based on empty parking lots.
For my travels I use Google map frequently to find a hotel.
Most often letting a Thai make reservations over the phone turns out less expensive than using online reservation services.
A number of times when an online service indicated no rooms available, the hotel actually had plenty of accommodations available. Some hotels limit the availability to online vendors.
สกลนคร Sakon Nakhon