I've spent a lot of nights at Avani and looked at living there pre-covid. IMHO, best hotel in Pattaya for quality, location and price.
After Covid lockdown they had a 39,000B per month special including laundry, breakfast etc. Unfortunately, it ended in June while I was arriving in July. A lot of the staff I knew had left during Covid.
I would stay there now for 40K per month if it was available. Who did you contact to get this rate? You can DM me if you prefer.