'There are empty sands even in high season': readers' favourite island breaks in Europe; Small islands turn simple pleasures into lasting memories. Our tipsters enjoy tavernas, beaches, footpaths and sealife from Rum to Andros

Byline: Guardian readers Winning tip: a walker's paradise in the Cyclades Andros, just a two-hour ferry ride from Athens, is inexplicably missed by most foreign tourists. Greener than the other [...]