We would recommend staying at Kalliniki, it was a good price for value. The apartment was relatively spacious and in a good proximity to the city centre. What bothered us was the cigarette smell, it was also a bit stuffy (although the air humidifier provided really helped). The windows open directly onto the street, so having windows open or even uncovered was not an option. The host was very kind and responded to all the questions we've had. We also appreciated her flexibility with our check in.
Good for a shorter stay.