These days there are more people than ever who work at home, but working out of a home office can be distracting. In such circumstances, a nice little café can be a lifesaver, especially if it has a WiFi connection where you can connect to the Internet. Scope out the local area and see what you can find for those non-productive days.
Cafés are great places to relax while you're traveling, and if you can find an Internet café, that's all the better -- you can get work done, too. It's a good idea to research your destination before you head out, so you'll know where the most convenient Internet cafés are located.