In general, a facility - any facility, any company - is as good or as bad as its management. Especially in dialysis, you really can't tell if you like it until you try it. Also remember that those of us who complain on a board like this one are the unhappy workers; the happy ones rarely come here to praise their units, companies or managers.
I would say, go for it! Obviously, you were impressed with your manager or you wouldn't have taken the job. If you really find that dialysis isn't for you - and you will know this in a few weeks - then move on. But you may absolutely love it.
Good luck!
DeLana