Most islands will have a little of each of these elements, but some, such as Ios, have given themselves over to party tourism almost completely.
Most islands have a variety of offerings while some, like Ios, are almost entirely focused on party tourism.
To see how the Dutch of a later era lived, climb the cobbled street of Hollander Slope (number 5 tram to the Ishibashi stop), where you'll see some red-brick and wooden clapboard houses with colonial-style verandahs and a rare sight atop houses in Japan chimneys.