We stayed at Dimitris's place for two nights as we explored Athens. The best thing about it was Dimitris himself. He's super-organized, really friendly and helpful and so easy to reach with questions. He provides a phone with pertinent maps that include highlights of places to visit and restaurant/bars to experience. We ate at a terrific authentic Greek restaurant because of one of his recommendations.
The apartment itself is nicely located. Good neighborhood. Within walking distance of all the major tourist attractions if you are in reasonably good shape. The bed was big and comfy. And there's a nice, big patio just off the kitchen.
I would have given his place five stars except for the size of the bathroom. It's really small. We're tall, slim people and it was a bit of a challenge to maneuver in there. We managed, though. It wasn't a big deal at all for us, but it might be for others.
All and all, we're glad we stayed there. Great value, great host.