Anything less than an hour, there's no way my kiddo got enough rest! Anything more than 2 hours, I wake him, otherwise he won't sleep at bedtime.
My 2 year old was never a good sleeper, and horrible to try to work into his own little schedule. My other kids were super flexible, but not my 2 year old!! Too much or too little sleep severely affects his mood.
Shorter naps are normal at that age... longer naps, to me, usually means my son was overstimulated (preK) or is getting sick. But anything less than an hour, he can sit and fuss! At least being in there gives him the opportunity to go back to sleep if he needs to.
ETA: The toddler bed is still new. He may falls asleep on the floor, in the toy box, in the closet, but me personally, I'd let him sleep where ever he lies. I wouldn't let my older kids (when they were young) come out of their room until the clock said nap time was over!