Santo tomas is beautiful, so are the HC apartments. We stayed in the Hotel Victoria Playa last year and are returning this year too we love dit so much!
Like Pippy saiud you can arrange car hire at the airport, and i am sure there is a shop next to the grocers in the little parade of shops opposite the HC apartments that hire cars out.
Try the chinese above the suprtmarket, next to Dr pedros surgery, it is fantastic and so is Dr Pedro, If you need to visit him, which i hope you dont! We did twice! Brill with kiddies.