Polymnia Apartments were interesting.. a little 'retro'! A short walk from all of the amenities and clean and comfortable. Access to neighbouring pool is permitted, although the beaches are excellent, if a little crowded at times. Definitely hire a car and explore the island, there's more to see than lassi and the views are breathtaking.
Restaurants and bars are getting a little pricey, which is not unusual. Visit Argostoli one evening for excellent dining and a relaxing feel