If it won't come apart you may have to hire some people to move it up the stairs for you. There are slider things you can put on the bottom of heavy things to move them across floors, but that won't help with getting it off the truck and up the stairs.
Well, my hubby wouldn't ask more than one person to help him move this tank to its new 2nd floor location and he dented up the the front of the vanity along the bottom right where you see it when you walk into the room. I've got four dents about the size of a pea in my brand new vanity. It is a dark wood finish. Any idea how to repair these?