Positives: The View in incredible, absolutely breathtaking. It's probably one of the best picturesque locations even though you cannot see the sunrise or sunset from this bnb. You can sit on your balcony and see an unbelievably gorgeous view. Christina was a very gracious host during our stay, offering suggestions on places to eat and visit. She had a bottle of wine and snacks available to us during the stay. The room was clean, comfortable, and the AC worked well. It's a very nice place to stay, conveniently located right off the main road.
Negative: The only negative is the location in relation to the traffic on your balcony. Due to the location of the house being right off the main road, our balcony was constantly used by masses and masses of people at all hours of the day and night as a thoroughfare. We referred to it as 'Grand Central Station'. On average, there were at least 100 tourists, which we eventually called 'visitors' who would walk right by us on our balcony to go up the stairs to the main road. It became so comical, I ended up taking pictures of the herds of people coming through. Some would come down the stairs, stand right next to us, take pictures and then go back up the stairs. There is a little gate at one of the entrances which didn't shut well. Even when it was shut, nothing prohibits anyone from opening it and walking in (which they absolutely will). If you've never been to Oia during the peak season, I'd compare it to 'Disney on steroids'. So many people in the little town of Oia looking for the best place to take a selfie, literally climbing over walls, opening gates, doing anything they can to get a picture. And since this bnb location is picture perfect, it's often traveled to and through, right on our balcony, and there is no way to stop it.
Overall: It's a beautiful bnb, perfectly situated for fantastic views and pictures which is why I gave it an overall positive rating of 4/5. The only downside is having so many people 'visit' you on your balcony at all hours of the day and night.
I hope this candid review helps any future renters as they decide where to stay in Oia.