Well, it's normal in Greece to build a two-storey house and then complete only first or second floor. I found this one special - building site on ground and top floor and completely finished middle floor. Keeps me astonished... ;-)
There are several web pages on Kastelli Kissamou. I recommend the following:
Kissamos by West Crete
Kissamos by Interkriti
Kissamos in Greek
another - Kissamos in Greek
there is a little piece of sand beach in Kissamos, at the east side, there is also a taverna with nice meals. On the other beach at the side of the town is a rocky beach.
From the port of Kissamos every day a boat is leaving for a day trip to Gramvousa and Balos. A very nice day.
If you're lucky, you'll be able to visit this small church. On the outside it looks amazing but we didn't have the opportunity to see its interior.