Best things to do in Bergen in May?

Hey guys, we're 2 people planning a trip to Bergen by the end of may. We have roughly a week and we'll rent a car for a few days, so we'll be flexible.
What are the things that, to you, make Bergen beautiful and fun?

Do you have recommendations for fun activities? Things as
*) hiking trips (we're both avid hikers)
*) canoeing on the fjords nearby?
*) island visits
*) historical sights
*) must-try restaurants

Thank y'all so much in advance!