Translation of percepción

I learned Russian during 8 years in highschool, but since I left school 6 years ago, I have forgotten most of it and did not have opportunity to speak or practice in any way. That's why I am on Vocabulix.
There are changes in regulations for people who wish to travel to Eastern Europe. This is advantageous. In the U.S., as in every country in the world, there are positive and negative changes.
I like music very much too. I prefer classic music, but rock is also good. When you come to my Berlin we need to out to concerts together and visit a few bars. They are all close to the center.