I had booked that long term stay because it was required on my visa application. I only asked because I was curious if I could get the STV and not actually stay at the place I booked. But at this point I will probably just use the visa I have!
i did all that. But they told me i had to apply online through Thailand where there was no STV option then send in my passport to the embassy. When I emailed asking about that. They just told me to put i was staying for 90 days.