My wife, myself and our 2 kids stayed as Manolis place for roughly three weeks. The location was absolutely fabulous for our needs! A large (free) parking lot, main bus station and large grocery store were a few blocks from our doorstep. Also right around the corner was a plaza with several cafes and space for the kids to run/bike around in. The house itself is right in the old town but in a very quiet section with few tourists-- and yet the main tourist drag was within easy walking distance. We had rented bike for the duration and here again the location was perfect. Getting out to the countryside was fairly straightforward once we discovered the bike path running along the main road above the bus station. I can't imagine a better situated apartment -- especially for families!
The apartment itself is three levels with a small kitchen/living room/bathroom on first floor, bedroom and small balcony on 2nd and loft space on the third. There is also a staircase leading out to a nice rooftop balcony from the 2nd floor. The loft couch slides out to form a queen sized bed - which is where our kids slept. Each of the three spaces has an air conditioner which worked great.
The kitchen is pretty small and difficult to put together dinners. After a few tries we gave up and had most of our meals out. Keep in mind, however, that there were four of us - for two I think it would have been just fine.
The space did end up a bit cramped for all of us. One thing that would have helped is if the wifi connection was extended to the second and loft levels. Since the kids live on their devices it meant all of us clustered downstairs. I don't think, however, any of this is a consideration for stays of a week or less. I also discovered late in our stay that there was municipal provided wifi in the plaza (just around the corner).
Manolis was extremely responsive whenever we had issues - even the silly ones. (European wash machines require force to open :-) ) He owns a cafe/bar in the main tourist area - maybe 8 blocks away - which meant it was easy to reach him. And, of course, he was always available via cell.
I feel like I am not doing justice to how great the apartment and location really was. Basically if you want to feel like you are living in the "real" Greece this is the place to stay!