My wife's stay at Zenith Blue was one of the best experiences she has ever had. Staying in a cave with an indoor hot tub and an incredible view from the Airbnb was definitely a unique experience worth having.
The location is perfect, especially if it is your first time in Santorini. It is perfectly located in between Fira and Oia (the two big towns on Santorini). You can also easily do a 20-minute walk to Fira or a scenic 2-hour hike to Oia. There is easy access to food, cafes, a market, and a pharmacy nearby. It is a short 15-minute walk to Skaros Rock (great hike with an amazing view), but really the view from the Airbnb was one of the best views you can get on the island.
Yiannis and his crew were amazing at making her feel welcome and ensuring that she had a smooth stay at the Airbnb. Everyday there was someone that came to the room to ensure she had clean water for the hot tub and that the water was regulated to the perfect temperature. There is a maid that comes daily to clean up the room. The room has a small fridge for water and food. It also has a hot water kettle, if you want to make tea. The only improvement she would recommend is to have a coffee machine and microwave. However, coffee, tea, and water are not hard to get since you can easily get it from the Street Coffee café down the street.
We want to give a special shout out to Yiannis who went above and beyond as a host to make the stay easy and stress free. Upon arrival, he gave a detailed introduction to Santorini, its culture, and history. He pointed out all the best places to visit and check out. He even booked a tour that allowed her to experience all of Santorini in the short time she was there. He also booked transportation at the last minute when she was too tired to walk to dinner. On her last day, because she wanted to explore Oia before a late flight but had to checkout at 11AM, he arranged for her luggage to be picked up and held at their Oia location until the ride to the airport. Finally, he arranged for the transport to and from the airport. Everything was done immediately, conveniently, and with great communication along the way.
I definitely recommend staying here, and will without a doubt return to this place again.