Training in Poland

I was in Poland last week. I had General Electric CT training in Mikolow. It's near Krakow. Mikolow is not a big town. I' ve been there for two weeks.

[This is okay, but better would be: Last week I went to Mikolow in Poland for General Electric CT training. Mikolow is a small town near Krakow.]

I service CT scanners, so periodically I have had to improve my skills in this area. My training was in English, so it was very useful for me. There were people from Russia, Spain, Serbia and Uzbekistan at the training.
I'm planning to have General Electric MRI training there at the end of the year. I need to have a Schengen visa to come to Poland. I think it's easier to get it than an American visa.

Молодец! Если бы мой русский был таким отличным!