Не сильно заумно
Вот пример

Hi,(имя, кто одерживает письмо)

How are you? I hope you're well. Guess what? I'm going to travel with my family this holiday!

The town is called London. It is a capital city of Great Britain. It's very big town. It's seems amazing! There is a lot of amazing places to have fun. For example, great park near home, cool shops and other. The flat is comfortable and modern. I really like it! It's on eighth floor. It's in a quiet street.

Oh... It's time to finished. How about you? What are you going to do this holiday?

Take care!

Bye, (имя, кто отправляет)