Проверьте текст на ошибки и исправьте если они есть At the beginning of summer, I went to the city of Sochi for three weeks. We went there by train. We were on the road for five hours. The main purpose of my trip was treatment. But besides that, we went on excursions, visited various parks and, of course, swam in the sea. We also went to the mountains and admired the beautiful views. I really liked the city itself.After the trip to Sochi, we went to see my grandmother. We were there for one week. During the whole summer we went to see her about three times. I really like to go to my grandmother. There is a river, fresh air and forest. My cousin comes there with me. Together we are having a great time there. We also swam in the pool many times. Also in the summer I read a lot of books. That was the end of my summer and it was time for school.
Всё правильно, только в последнем предложении перед словом end нужна запятая.)