Translation of refrain in Spanish

So you have taken a German course in the Ghoete Institute. Well, I certainly learned something with you, and your German is already a lot better than last time. I think we really did it.
We can help each other with these language studies, this is also the main purpose of Vocabulix. I have already got in touch with some other users. I can speak Italian, but my grammar is weak.
Of course I understand the reasons. I live in Thun, which is not far from Bern, our capital city. How come your Spanish is so good? Have you ever been to Switzerland. You are most welcome.