http://www.npr.org/sections/thetwo-way/2017/08/09/542433786/qatar-ends-visa-requirements-for-80-nations-calling-itself-most-open-in-region
tl;dr Qatar just declared itself visa free for the majority of the world
Would there be problems with visiting there considering the ongoing blockade?
What is some cool shit to do in Qatar?
It wasn't exactly hard to get in before, you just got a visa on arrival. There isn't really that much to see in Qatar, it's like a smaller version of Dubai that's still under construction.