For condo rentals, Yensabay is popular, 8000-10.000 Baht and next to Sunee,
Viet Talai 1 and 2 near Jomtien are 8000 Baht for studio, VT6, next to Hilton is very nice, but starting around 15.000 Baht.
Nirun condo is good price, 6000 Baht for furnished studio, but it is kinda far, almost at Sukhumvit.
Fairly new Base Condo on Second Road is ideally located, 4 minutes walk to Boyztown, Central also 4 minutes, it is very near Royal Garden. But no studios, 1 bedroom is smallest, at around 15.000 Baht. Tons of Airbnb Chinese stay there, outside it feels more like a hotel than condo, but such great location, walk everywhere.