Translation of greet in Spanish

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.
Do you want learn Spanish? Do you have a telephone? I am looking forward to hearing from you and sorry again, I was extremely busy during the last three weeks. I hope you can forgive me.
The biggest city in Germany is Berlin. The other big cities are not as big but some of them are really nice. And especially the smaller cities here are very charming and worth visiting.