We're going to Tutortime on 6th. I think Chelsea Piers also has a good daycare. You should call now for January. They'll tell you they're booked for a year (but I think that's b.s.) Also buckle my shoe...not sure if the one over this way takes infants, though. The one in Tribeca does.
Re: Daycare providers in midtown
DD is in Preschool of America - West 42nd Street between 8th & 9th. We love it. They don't have a website unfortunately.
I've also heard good things about Manhattan Nursery School - on West 32nd I think - but I think they only take older babies.
GL!