I'm from Norway, and we have 25 days a year, which also comes out to 5 weeks. I had 7 extra day transferred from last year, so 32 days this year. This year was the first I took out 4 weeks of summer vacation, but usually 3 is enough for me. Travel is fun, but after 2-3 weeks of traveling I start to get a big exhausted, and want to focus on hobbies, house work, or similar stuff.

My routine has been: 1 week vacation during spring/Easter, 3 weeks in summer, 1 week fall or Christmas vacation.

On the other hand, I've also worked in other countries where there's much less focus on vacation. I like our balanced view very much.