I spent almost seven hours cleaning my storage room today.
Why did you spend such a long time cleaning it?
I used to clean it at least once a week. I just need to do it because my girlfriend doesn't want to do it.
Cleaning one room for seven hours seems excessive. I don't think it's reasonable to spend that long cleaning the storage room because it's not healthy. It would probably be just as clean if you spent significantly less time.
It was a very large and messy room.
Even so, I think spending seven hours to clean it is too much. I think you should try to relax your cleaning standards a bit.