I would strongly advise you to not consider the Patong Towers.
That building had been up over ten years and never been in use.It has in the past been operated by some shady timeshare groups where everyone lost their money.
Recently a bank has been selling off some parts of it at auction to collect debts.
I am not in the property market or have anything to gain by saying all of this and I am sure some of the other BMs could pull out stories about this place.
I recommend that you come here first to do a recce.