There was an issue when we arrived as our room had been double booked. We were taken to another nearby hotel. Replacement was fine but it was rather annoying and disrupted our next day as we couldn't unpack.
Thea Studio itself was very nice, good pool, everything nice and clean, breakfast was pretty good too! Thira may seem further away but in reality it is 10 mins to the centre and a further 3-5 mins to the caldera. Close to bus station also, which is useful for visiting other places on the island.