Answer:
Dear grandparents,
I am having a great time here in Stockholm ! We has seen many beautiful places: Central park, the view of the city of Stockholm, big bridges,... I have taken lots of photos. I really want to eaten some specialities foods and drinks in this traditional country. There are many advanced and malls.It is warm weather. Me and my family staying in my in here. In the evening, we can go to the Old Street and The top of Stockholm mountain to seen full of the views of Stockholm. I am so happy and it is more fantastic than I imagine. Tomorrow we are going to the souvenir store to buy some specials presents to you and my best friend. 
Wish you are in here,
...(tên)
27 Park Street, the City of Stockholm.
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