TL;DR
Cute for pictures: 3/5
QPR: 5/5
Main varietals: Greek whites, reds, and sweet wine
Tasting fee: €16-35 depending on the flight you choose
Average wine rating on Vivino: 4.0
I remember personally liking the wines here better compared to Venetsanos so recommend trying Venetsanos for the view and trying Gavalas for wine tasting flights! This winery is filled with history as it started more than 300 years ago. You can take a peak at their old traditional facility and handmade barrels, which are still used to store Vinsantos, sweet wine that put Santorini wines on the map. Tasting flight was a good representation of Santorini grapes: Aidani, Assyrtiko (whites) Mavrotragano (red), Vinsanto (sweet).
More about Gavalas: Website