Translation of sum in Spanish

When we got our room at the Rex we were shocked once again. The room had a terrible smell of cigarettes and we insisted on moving. The next room they gave us was a non-smoking room.
Thank you for your kind mail. I guess that we are friends now! The last winter was extremely cold. Now in Summer the weather is nice. My English is terrible but i hope that you will give me a chance.
There was an extra seat available (the last one apparently). We were so glad. 45 minutes later we sat in the place, eighty percent of the plane was empty. They really need to update their system.