I came alone to Santorini and really had a great experience, especially because of my stay at Pension Livadaros. Even though its on airbnb, it's more like a hotel. My room was cleaned every day, towels were changed once, and I had a nice balcony with a table and chairs. The pool is very big and clean! Anna's family is great about maintenance and helping out in any way. Fira, the capital of Santorini, is only 5 minutes away with ATV (highly recommend renting one because it's the easiest way to get around). I rode from the Northern tip of the island to the Southern tip and it was great and easy, quad rentals are only 25 euros a day and you can sit two people (just make sure to bring your driver's license with you).
When I was waiting for check in, Anna's dad kindly brought me juice and a pastry and for check out, I relaxed by the pool and in the lounge room since I had a night flight. They offer free pickup from the airport, and 15 euros for drop off! Overall, I 100% recommend this place and will be back next year :)