If it was for Old Republic Era, I would choose either Scarif or Spira for the beaches. Scarif because it's tropical, and Spira for the tourism. Lol
Then again Corellia had some beaches that were very beautiful.
I'm used to having seasons so any planet with seasons and a nice shoreline would be perfect, although I wouldn't hesitate with the planet being nice all the time. Perhaps mash Hoth, Tatooine, Manaan, and Endor.