Translation of insistence in German

Hamburg is a very beautiful city and i have a friend studying in that university. I hope you can enjoy your live and studying there. I have been teaching in a language school for a while. But in one month I am going to be in Hanover again.
The best place to eat for us was the Tamarin cafe. The atmosphere was really a backpackers atmosphere, but with style. People were sitting there with laptops and and travel guide books.
We exchanged numbers and they offered that we should contact them once we'd arrive to the capital. After dinner we bought some chocolate in one of the many stores, but it was not tasty, compared to Swiss chocolate.