I recommend this place and would stay there again if I come back to Santorini.
We are a family with a child of 2 years and stayed 3 nights looking for a kitchen to have quiet diner as restaurants is complicate with my energic child. As said in other posts, Rhapsody's appartment is a kind of holiday's rental appartments. There is a reception taking care of you and the guy can help you following your needs such as giving you advices. The appartment is facing east side of the island (not the caldera which is on west side). As you can see on the pictures, excepting you really want the Caldera (and pay for it), the view from the appartments is incredibly wonderful. We enjoyed having breakfast and diner on the balcony when the wind was acceptable. Walking is acceptable taking 15 min to most places of Fira and up to 30 min to bus terminal/South of Fira. There is a bus stop just in front of the appartments but it is not very convenient (bus passing every ~20 min. or less), we just used it once when really tired. A bad thing for Santorini: buses are often full and you need to "fight" to get in for having a seat, expecially going to Oia (which is the bus going to Rhapsody appartment). Car is not obligatory and we managed without, but if you stay longer than 3-4 days, I recommend you rent one. For restaurants, I recommend Kapari which is not close to appartments, but which is nice greek food and affordable price. For quick lunch, "Why Not" is a good place and for pizza: "Da Vinci" are both close to appartments.