Kostas's flat is amazing! I stayed there for a month with my boyfriend and felt most at home. The place is equipped with everything you could need, very tidy and spacious.
It is in a quiet zone 2 neighbourhood, just 5 minutes away from canada water tube and overground station. It has many amenities close by, such as a shopping mall with a supermarket and a big park very close.
Kostas was very helpful and answered to all of our inquiries, he did the check in himself which I think is always a nice thing.
I really recommend this apartment and would definitively come back.