We stayed at Nikolas place for 5 days. The apartment is very well located in the heart of Oia. Walking distance to everywhere. It is on a narrow street so there are a lot lot of people walking by but this was expected due to its very good location.
We were travelling with our 1 year old baby and the apartment was very good for him, so I would say it is babies friendly. Transfers from the port to the apartment and from the apartment to the airport were organized by Nikolas and worked very well, we asked for a car seat and it was provided, we also got help to bring the luggage all the way from the taxi to the apartment and viceversa. The views from the apartments are amazing. I think the apartment highlights are the location and the views. From 1 to 5 (being 5 excellent) Bed was 3 , cleanness 3, bathroom 3, kitchen 3, living room 4, location 5, views 5, service/communication with Nikolas was 5.