The city
The city of Rethymno is considered one of the most beautiful cities of Crete and Greece in general. Long beaches and a picturesque old town are its main characteristics. You can take a walk along the seaside or get carried away in the meanders of the old town, admiring the architecture which is a mixture of the Greek-Venetian and Turkish civilizations that are tangled up after centuries of co-existence. The Archaeological museum, the Venetian castle “Fortezza” and the minarets in the old town are some of the points of interest really worthwhile visiting among your breaks! Or just relax under the sun in one of the wonderful beaches around Rethymno. Here are some useful links to get an idea:
http://www.ancient.eu/crete/
http://www.visitgreece.gr/el/destinations/rethymno
http://www.cretetravel.com/guide/rethymno/
http://www.greeka.com/crete/rethymno/rethymno-tourism.htm
https://www.lonelyplanet.com/greece/crete/rethymno
General info: http://www.crete-kreta.com/rethymnon-prefecture
City info: http://www.rethymno.gr
Best things to do: https://www.incrediblecrete.