The apartment is pretty much as advertised. 2 generous bedrooms open plan kitchen-dining-lounge area, all beautifully fitted out as in the pictures.
What is both unexpected and really nice is the genuine warmth, kindness and desire to make your stay enjoyable. An example of this was the welcoming fruit platter and bottle of white wine we received.
As for location it's ideal IMHO. Oia and Fira get inundated with cruise ship people whilst Megalochori is a beautiful old village with lovely places to eat at, and is also quiet and peaceful enough to relax in privacy.
The plunge spa pool is the perfect place to relax and sip a glass of wine.
We hired a Hyundai i.10 from the owners extended family, and so long as you don't mind tight narrow roads it's a great way to see the island. IMHO though stay with a small narrow car.