Non café laptop working places

There are quite a few cafes around that are great for coworking, but a couple of issues that I have with them:

1. understandably, you have to buy stuff there. some days I want to conserve rather than spend

2. they tend to close early. I want options later in the day too (e.g. after 5pm)

So Redditors of Zürich. What are my options?