Translation of guarantee in Spanish

I was never there but I heard that the night life is very exiting. I am going to Amsterdam next year with my uncle. He will return to his house where he was born. I think to come to germany next year but I don have any idea
you should try to go to the verb drills in the verb menu, they helped me a lot. I wasn't really motivated for it at the beginning but now I am motivated for everything. I am also interested in learning Russian.
We had a great day in Bolivia and amazing 3 days in the entire area of Northern chile. It was time to move on and we wanted to go South to the capital of Chile. We were so exhausted from our day trip that we immediately fell asleep.