Dear (Имя которое нравится),
I've just read your letter and i'm so pleased,that you are having great time here.I really love Finland too.We visited it 2 year ago,and I would reccomend you to go sightseeing in Tacho.It's very beautiful place in the South of Finland.
I wih my class are going in Kazan on april holiday,so, will write you as soon as possible about this trip.
Now,I have to help to my mother with washing-up.
I wish you an amazing holiday,
(Своё имя)