According to the information that most PSMR attendants provided a shuttle service has been scheduled. The program from Kos airport to Helona resort is available and you can also download the pdf version here.
The distance from airport to the resort is ~5km and it will not take more than 10minutes. The small PSRM bus will have 9 seats and according to your response it is convenient for most flights. In few cases, were the flights are more populated we will need to schedule 2-3 trips. If -however- you prefer to take a taxi the price to the resort is 20€ and the taxi can fit up to four persons.

 For the return trip the schedule will be finalized in Kos. An indicative program is now available and can be also downloaded in pdf here.