I can't say enough good things about our stay at Maria's place in Oia. She booked us a taxi from the airport and had a porter there to help us with the bags and show us where the apartment was. We got in late at night so this was very helpful. Maria came the next morning and gave us a map of Santorini and explained EVERYTHING that you'd want to know for your trip. We texted her via WhatsApp a few times for various suggestions/questions and she was always quick to respond. It was really great having someone so helpful and kind as our host.
As for the apartment, the view is absolutely stunning, it looks fake! There are a decent amount of steps from the "main street" in Oia down to the apartment, but it was worth walking every one. You have a great view of the volcano and there was a nice patio where you can sit, have breakfast and enjoy the view. There is plenty of room in the apartment, although we spent most of our time exploring the beautiful island of Santorini. There are plenty of shops and restaurants within easy walking distance of the apartment. If you want to venture around more of the island, you can either rent a car or take the bus; both are very close to the apartment as well (less than 10 minute walk). We saw one of the very popular pictures of Santorini of the blue-top church on the listing and weren't sure if it was just a photo of Santorini or one by the apartment; it is definitely by the apartment. That iconic photo spot is about 20 steps up from the apartment and you get to see that view every time to you walk up and down the stairs to the apartment.
I would highly recommend this place to anyone wanting to visit Santorini. You won't regret it!!