I use A-1 Personal Storage for work-related storage and have had a pleasant experience with them over the last 2-1/2 years. They are conveniently located close to where I live, and the owner and his employees are very nice.
I have always had positive interactions with the staff at A-1. This is important because I interact with them frequently, as I have things delivered to the office that I then have to go put in storage. Also, the facility is very clean.