It's on Poinciana Blvd (so, yes, near Crescent Lakes) just east of WDW. From memory, it's not gated, but I wouldn't get too hung up about that. Often the gates on gated communities are left open and, even when they aren't, everyone and his dog knows the code, anyway.
Access to WDW from Poinciana Blvd is very easy. Straight across the 192 when you hit it and left onto the Osceola Parkway. That's it!