exercise for exam

Please correct it
Exercise for exam: I have received a letter from my English-speaking Mary, who writes:
...It was great to hear that you went to Italy during your spring holidays. I have always wanted to visit this wonderful country. Did you enjoy your journey? What places of interest did you visit? What impressed you most of all? Did you like your hotel?
I must write a letter to Mary.

Moscow,
Russia
15th March 2015,

Dear Mary,

Sorry it's been so long since I last wrote, but I've been too busy preaparing for my exams.
This trip was superb. I liked Italy very much. We had a really enjoyable holiday. We have visited many cities, such as Rome, Florence, Milan, Venice, and many sights, as well. I liked Rome most of all. This city is one of the most ancient cities. There we saw the coliseum, Vatican, many differen museums and spectacular fountains. In addition we had a wonderful hotel in the heart of Rome. It was really beautiful and comfortable. I recommend you this hotel named "Vatican green house" to you. You will have the best rest (holiday) there.
What are you going to do during your holidays? Will you spend your summer with your parents? Do you want to go to the country to camp?
Well, I'd better go now as I have to study for my exams. Hope to hear from you soon.

Best wishes,
Nastya

Nastya, this is excellent. You said your English isn't good, but this is very good. Just a few really small changes. Your friend would have understood you perfectly. --Ed