написать ответ на это письмо 80-90 слов на английском

Sure, here is a sample reply to the letter in English:

Dear [Sender's Name],

Thank you for your letter. I appreciate your kind words and am glad to hear that you enjoyed your visit to our city. It was a pleasure to show you around and share the local culture with you. I hope you had a safe journey back home. Please stay in touch, and I look forward to meeting you again soon!

Best regards, [Your Name]