Self Storage that accepts deliveries?

I know there are at least two self stores in Overijse another Waterloo but I am not sure I ever heard of any that any accept deliveries even in UK where there are lots of them. Usually self store is you who does the leg work, go open it put stuff in lock up. Unless it's done by a removal firm in which case they do the leg work. I think the issue would be if something is damaged how do you prove who did it self store or delivery people. The only option would be find a person willing to go open it accept delivery and lock it agin I think if you're unable to do this. I don't know how big a delivery you are getting maybe a post box might be more what you're after
Self store are also quite expensive here from what we found out.

Not sure if they can accommodate deliveries but http://www.shurgard.be/ offer a great service. Office in Overijse speaks English very well.