Rethymno sits between two bigger names. Chania has the famous harbor and Heraklion has Knossos, so Rethymno gets fewer tour groups. Venice built most of the old town, and the Fortezza on the hill is a well-preserved Venetian citadel. The Ottomans took the town in 1646 after a siege that ended on 13 November, and left a minaret and a mosque behind.
Three days is the right length because the town is small. One day covers the Fortezza, the lanes, the harbor and the beach. The rest is out of town: inland to Arkadi Monastery, ancient Eleftherna and the pottery village of Margarites, and south through a gorge to Preveli and Plakias. These sights are 25-35 km away on winding roads, so a fourth day mostly buys more driving. In November the sea is still around 20°C and the crowds are gone, but the sun sets before 5:20 pm, many harborside tavernas have closed and the buses thin out.
Day one is the old town, day two the inland loop and day three the south coast. Start on a Wednesday: the Eleftherna museum is closed on Tuesdays, so day two lands on a Thursday, and the Fortezza closes at 3 pm every day. Rent a car for days two and three, because winter buses reach Plakias but not reliably the rest. For the rest of the country, see the Greece country page.