I had a really great stay at Dora's Airbnb. The view, like other have said, is unreal and you can access the terrace from the room.
Dora is an incredible host, she picked me up from the Subway station as I had large bags and wasn't sure how to get to the listing.
The room is perfect for one person or a couple with a couch. There's a small supermarket 2mins away, or a larger discount one 10minutes away. it's a 40min walk to the Plaka area, less if you take the many busses close to the listing, and very close to many great restaurants away from the tourist centre for authentic Greek food.
Would recommend this place and Dora to anyone visiting Athens.