Hello, (её имя)
How are you? What do you do today? I write this letter for you,because im bored. Today i went school,ate in cafe,meet my friends and do other things. Now i write letter and do my homework. It's hard,but im try. Yesterday i read about your contry,is very interesting. How you study? Good? Do you have a lot of friends or many? I want to tell you about my country.
I live in Russia. I love my country, Russia is awesome. I will answer your questions. Houses in Russia are big,small and middy. Houses are very beautiful,in old city you can see aold buildings,they are very nice. 
Usually,in typical house have 2 or 3 bedrooms. If you have a flat,then you have 1 or 2 bedrooms. I live in flat,and i have 2 bedrooms. One for me and one for my mom and dad. I like my room,i do all then she be comfortable.
My mom call me wash the dishes,sorry,i need to go. 
Write you later,and i wait your answer to my question! 
Bye xx