Translation of Sperrstunde

I mean every thief becomes excited if he sees such a stupid tourist as I was. Some little children, I think that they were from xyz origin, came to me and offered me a newspaper and asked for money.
The letter and the date are fine. Let me know how many people are interested. I cannot promise that it will work. The size however is OK. It is worth a trial, maybe even the ones with Spanish words.
Your offer seems interesting to me. The language exchange is one of my future projects, so that we will contact you later when I am ready to discuss the ways and possibilities of learning together.