Wonderful Resort
This has been one of my favorite places to stay the last few times. It's beachside so you can walk down for a morning run (or to Pangea or Lym's for sunset), but it's also a few minutes walk or scooter ride away from KoHub.
The Bungalows are nothing fancy, and sometimes I do miss having things like a desk, but they're clean, you have a porch (with table and chairs), large fridge, and AC.
It can be a bit problematic to book this place online for a decent price during high season, unfortunately, and the price booking online through booking.com seems to be around 30K TBH a month while in person you can negotiate between 15-20K a month (depending on availability). I even know one person who got them down to 12K. But if you're willing to book a few days initially at say Pra-Ae apartments or Grand House, they're a good option to try and get a deal on in person.
Note that Wonderful is close both to Pangea which holds large parties every Tuesday (until 5 am in the morning). The background base-noise never bothered me too much though, use a speaker and play brown noise if it really bugs you ;)
It's also on main road so the bungalows closest to the road might get some noise. Might be worth asking for something further in