i have worked in many nurseries.
a few were utterly delightful.
a few were truly hideous (often chains - some in very posh areas with very posh parents)
most were okish/in between those two extremes on a spectrum (as you would expect).
over 3s do well - exciting, stimulating - if the staff are good that is
having worked in them, i would want to work in one before i put my children in one as its not always apparent what really goes on which is pretty sad for those babies/toddlers. equally, as someone who worked in many, it was easy to judge and then think, actually, this is a nice place. but obviously this is impossible.
one of the main things is that for babies/young toddlers, 9-5 or sometimes 8-6
is far too long. it was a very long day for lots of them. the odd one coped perfectly fine obviously, but sometimes it was very sad.