Kyoto's summers are famously hot, but if you take the Eizan Railway and get off at Yase-Hieizanguchi Station, you'll find a spot along the Takano river where you can cool off, enjoy a barbecue, or relax by the water with a drink and read. This spot is particularly recommended for those staying in Kyoto long-term rather than for short-term tourists.

Good coffee in bright space.

Small restaurant hidden in a backyard, peaceful restaurant. Excellent Italian inspired cuisine and wine. 

Koto In zen temple. Peaceful, luxurious, out of time. 

Small yakitori restaurant. Mika is the chef and she knows how to get your stomach full in style.  Really really good cuisine, cool ambiance, unexpected reggae playlist.