There is an official website that mentions all hotels suitable for test and go or sandbox. You choose a hotel and are immediately connected to the booking site of the hotel. If you use that you do not have to search if hotel is usable
Depending on the type of visa or no visa at all you need to have an insurance for covid. There was a list of advised thai insuranceccompanies and a general health insurance. H
most important is: book asq at hotel directly. Mostly you get a confirmation of your request and information how to pay. And what paperwork they expect. Some hotels have regular guests and asq guests. In separate levels of the hotel. Have a look at your booking . Did it mention asq?
