Are you going with your wife ? Then what do you mean with guestfriendly ? One girl, or a girl and a ladyman ? You want LT or ST ? Together with your wife ?
As a rule, the rooms are for double occupancy, therefore in a 4-star hotel you have to pay at least an upgrade for 3 by house policy. I think it is better,
when you look for a day room in a not so expensive hotel instead. This should be possible in low season for THB 500-600.
This is possible in Kata or Patong, where you have a much bigger selection.
I donīt know which standards you set, but Kata Beach is in the upper price range. Therefore,
As a rule for upgrades, I always look at
www.latestays.com. There you can compare competitive prices very easily and book a room just for one night (for the next day) in internet. You can checkin with your GF and check out the next day. A very good quality room for 900 Baht (2 guests) you get at Leelavadee Boutique Hotel. This is 10 minutes away from Bangla (for sporty people).