I just completed a 1 week holiday in Sri Lanka. My family (4 adults) used Ranjith Alwis from Ran Holidays, who drove us from Negombo to Sigiriya, Kandy and Hikkaduwa. Ran was a reliable and careful driver as well as a friendly and knowledgeable guide. We arranged our own accommodation, although I understand he also provides this service. I would happily recommend Ran as a driver if you need transport in Sri Lanka.