Café Sol is a chain, but it’s a quality chain. Their coffee is good and the service quick. They have a loyalty card and when you collect 8 stamps, you’ll get a free coffee. I often go there for lunch too: if I’m really broke I opt out for the egg salad sandwich, which the last time I got it was only € 2.75. If I can splash out, most Café Sols do really nice chicken curry with rice for € 6. They have delish pastries as well and lovely fruit salad(which admittedly is a bit on the expensive side). Very reliable and handy altogether