Translation of superfluity 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.
I am learning Spanish in university but I also have to improve it for private reasons. Do you have any suggestions. It is giving me a hard time lately as it is difficult. I need to be very patient.
We stood there in the middle of the night in the middle of nowhere not exactly knowing what to do next and where we arrived. We had to look for a place to sleep. The village did not have any paved streets.