Storage units are good for SHORT term storage. WHen my wife, then girlfriend moved in with me, we had too much stuff for the place we were living in. I suggested that we just get rid of what we did not need. She insisted that we store the extra. Well guess what? The storage fees over the course of almost two years amounted to way more that the stuff in the storage unit was worth. It cost about three times what the stuff we stored was worth.
If it is only a very short term thing, then find a place to store it. If it is going to be long term,,, get rid of the stuff and save some money