Hi Dave
I can't recommend anywhere to stay in Pattaya as we are heading there ourselves for the first time in October.
If you have a look at asiarooms their hotels start from $23AU per room... then do some homework on reviews.
However, travelling with your 16 year old you'd have to pick wisely as Pattaya has a bit of a rep. You might like to check out the web site Pattaya talk to get some ideas.
Even at my age and I'm very broad minded there are times when I have questioned my decision of going to Pattaya. However, we iz booked so we iz going.
Cheers Geri