I went to your son's post and upvoted his comment. I trust that's the "support" you asked for. If anything else is necessary, please advise.
Re your desired beach, most of my fave beaches are either east-facing or far from transportation. I wonder if Phuket might be good. The airport is in the northern part of the island, and most of the resorts / crowded beaches / civilization are in the middle or south. You might be able to find a great place just 15-20 mins from Phuket Airport.
Another option might be NW of Krabi airport.
Oh, and ... I once stayed just south of the horrible Pattaya for a few days, in Jomtien. The beach was very nice, quite quiet and peaceful. Of course, there were a few tourists, but on the quiet side streets between the beach and the main road were often as many locals as there were tourists. All in all, a great beach and a nice neighborhood.
And there are also many small apartments that you could rent for a reasonable price. And U-tapao (Rayong/ Patttaya) Airport is just 20 miles south of there.