I would 100% recommend Vivian’s place. Everything was A+. The location was great, my husband and I walked to everything you would want to see in Athens (you can take taxi if you do not like walking, but I recommend walking). The apartment was very modern, clean and very comfortable.
Vivian herself is amazing, she is excellent with communication and goes above and beyond to help you with whatever you need (places to see, eat, taxi etc)
Also a plus, there is an elevator in this building, so taking luggage up is super easy.
There was nothing that I needed, that was not provided by Vivian, she was just warm and wonderful.
Definitely stay here if you are considering it, you will not be disappointed.