Hi there,
I would recommend using one of the Greek ferries navigating the Aegean Sea. They offer daily ferry routes which connect Kos to Rhodes and Athens, as well as the other Dodecanese islands.
If you are going this summer, there is a daily ferry that carries passengers from Kos to nearby Bodrum, Turkey. Various Greece vacation packages offer ways to book a Kos vacation where all the details are taken care of. All you have to worry about is which beach on
Kos you want to visit first and what places of interest you want to visit while sightseeing on Kos.
Travadvice360