When I first created "centers" it took some it me for the children to be able to handle it. But, with time, and redirection, they learned the rules and it is awesome for many reasons.
Their play is more focused and there are less interruptions....for instance, the block play occurs in an enclosed space, so their structures don't get knocked down by playing children, they can kick back and read in the cozy corner without being trampled and there is nose buffers, etc. Of course, like you said, napping is much easier as well.
But, for some groups and some spaces, it doesn't work. Sorry it didn't work out for you
