Staying in Vivian's apartment in the Koukaki neighborhood was a wonderful experience from booking to departure. Vivian gave us several options to get to the apartment and we were glad to take her up on the airport pick up and drop offs from a friend of hers that is a local driver. Door to door service was a great affordable option. The apartment is on the 3rd floor, with a small elevator. It was essentially a 2 bed, 2 bath apartment with a small kitchen with a washing machine. The kitchen had plenty of glassware/plates/utensils in case you want to find some local snacks or get some groceries. There is a small fridge as well. The beds were comfortable, the bathrooms good sized for Europe. There was also a nice balcony with a small table and chairs to enjoy the beautiful Greek weather.
Just one negative, which was the noise levels in one of the bedrooms. One was relatively quiet, but the other one (with the balcony) was much noisier. The doors to the balcony allow noise and the bathroom is loud from the street. Light sleepers should stay in the front room.
Location to the historic area was superb. It was a 15 min walk or you hop on the tram/bus or metro (a few min away). There were good restaurants nearby as well. Definitely check reviews though, because some high rated were mixed near low ones.
Overall, I would absolutely recommend this apartment rental!