If you happen to be in Santorini do not forget to pass by Kira Thira bar. It is a jazz bar in Fira with jazz music and well known sangria. The only bar in Santorini that didn't change the last 10 years or more.
I used to live in Santorini for a year and Kira Thira was one of the few bars that was open all year long and one of my best night destinations. I enjoyed the music (Bud Powell, Chet Baker, Oliver Nelson, Madeleine Peyroux and more), the drinks, the decoration and people. Kira Thira is a small and cute place playing live jazz music or organizing music events.
I remember the nights when it was so cold outside and we used to drink rakomelo and listening to relaxing music. During winter you can see local people like teachers or doctors that are working at the island and during summer you can see people all over the world from Australia to Canada. Kira Thira is my best bar kind of style: Small, cozy and warm. It satisfies all senses. 

Santorini during summer is full of bars and clubs where people are having a lot of fun. However, Kira Thira is one of my favorite bars because it keeps its identity! You cannot miss it cause it is in the heart of Fira!
 During summer there are 2-3 tables out of the bar where you can sit, have your drink, listen to jazz music and watch locals and tourists that are having their walk. The bar is on wood and it has colourful decorations. There are also many posters on the walls!
Let me share with you one moment while having fun at Kira Thira last year: Drinking wine, listening to Cesaria Evora, covering myself with wool scarve and wearing warm boots, pre-Christmas period, yellow litle lights all over the place, look back on the past and dreaming about the future...