A letter to my host family

Thank you for all your support during my stay. I had a great time.
Thank you very muchI am so grateful for all the delicious dinners and taking for showing me to such beautiful places.
Your family was so friendly and accommodating, especially your granddaughter who was so pretty lovely and cheerful! I really wanted to talk to you more and I hope that I that I made you worry about me didn't cause any inconvenience.

Thank you for everything. I will never forget you. I’m looking forward to seeing you again in the future.

Please check that these details are correct. I'd like to know native-like expressions.

* calling someone's granddaughter "pretty" might be taken as you finding them attractive.