Very nice apartment, good location, good value for money, kind hosts.
The apartment is comfy, well equipped kitchen, sleeping room and bathroom. Fira is quite close but for more frequent visits and smaller excurtions on the island I recommend to rent a scooter or rather a quad. Restaurants, shops, bakery, bus stop is very close to the apartment.
Stathoula helps you in everything, organising transport from and to the port, recommends you boat trip to the Volcano, Hot Springs and Thira Island, etc. The pool is perfect, the island is so nice. Visit as much town on the island as you can. Fira is lovely but Oia is the nicest. Explore the whole island in a few days by quad, go to the lighthouse, visit a vinery, eat local food in restaurants, watch the sunset from a moody café (especially in Oia but be there in time as all the seats are reserved) and find the perfect beach for yourself. Then go home to Kelenis apartments to have a rest.