The apartment is clean, very nicely arranged, bright and comfortably fits 5 people. It's located in a walking distance from beaches and the city center (Paroikia), close to shops and restaurants. We were welcomed by Katarina's mum - even though she doesn't speak English very well, she was very communicative, cheerful and open. She gave us some valuable tips about the island, food, etc.
We were in the apartment in January. It happened to us to run out of hot water twice, but the hosts fixed the issue within an hour. The equipment in the place wasn't sufficient too (missing glasses, lack of shampoo) - I'm pretty sure it'd be much better prepared if we visited the place during the season.
We really enjoyed our stay and we truly recommend the place. I hope we'll have a chance to visit the island again in the future.