Konstantinos home is as beautiful in real life as it is in the listing! He and his staff were super helpful and made my stay there tremendously enjoyable! If you are looking for a quiet, serene and breathtaking place to rest and rejuvenate, you cannot find a more suitable accommodation!
Some good tips for travelers here:
The neighborhood is very residential and all of the cafes, restos, etc. are east and north of the port. I highly recommend renting a car, so you can see the many wonderful historical sites, tavernas, and get a sense of the charms of Kea! Avance car rental was excellent. The rate was reasonable and they were extremely gracious about needing flexibility for my return date.
The ferry from Lavrion is the only way to Kea (from Athens) and schedules can change daily. If you search for "ferries to/from Kea", you'll get several which will give you the ferry schedules for all ferry services to/from Kea.
The house is about 12 minutes from the port, near the top of a mountain, which gives you a dizzying view of the sea! I recommend getting a day or two's supply of water, so you don't have to drive back down to town until you're ready.
Best of everything to you, Konstantino! Thanks again!!