It is rather heavy, but I have dragged it up four flights of stairs to a top floor flat on a couple of occasions with no problems at all, as it has very robust rear wheels.
As for getting it in and out of the van, I suppose it depends what type of van you have. Mine is a VW caddy, and I find that I am able to tilt the machine, so as the front wheels are in the doors, you are then able to simply lift the machine and slide it in.
TBO honest, weight is not a big issue, and even if it was I would put up with it, as I am dead impressed. But then, if you ask my missus, that doesn't take much
Regards