Hi you can request late check out until 8.00 p.m. in the evening I think the cost is around 25 euros and then you are able to leave your bags in reception until you are picked up.  we have done that before kept our room until 8.00 then came down to eat and before you know it you are picked up hope you have a nice time the mythos apartments are great

Hi Maire you can get to Rhodes from Kos but not sure if by boat or plane but pretty sure it is by boat but not sure how.  There are plenty of boat trips that go from the harbour in Kos town but sorry cannot help any further the people to ask are Kostas and Costas at mythos