We stayed at Orestes' place 4 nights at the end of March and we're very happy that we've chosen to stay with him. The location is ideal: a couple of minutes from the nearest Subway station (which takes you in a couple more minutes across the water) and very quiet. You also have a lot of space: large bedroom and a bathroom with a huge shower. Unfortunately, it was too cold to sit in the garden but it looked lovely from the outside!
Orestes himself was very friendly and always happy to help us out with suggestions or advice.
If you're happy with staying outside of the city center, I would definitely recommend Orestes' place!