Hi there Sarah!
The path in question starts in
Disney's Coronado Springs parking lot across from the
main entrance. It's pretty easy to find. There's a crosswalk
across Buena Vista Drive, then a sidewalk on the east side along a
wetland area. Simply stay on the sidewalk until you
approach
Winter Summerland Miniature Golf Course, hang a left and you'll be at the
entrance to
Disney's Blizzard Beach in no time. I've found the walk to be quite pleasant and would estimate it to be no more than
20-25 minutes at a leisurely vacation pace.
As for guest room locations, I would recommend that you visit the
unofficial fan site www.coronado_springs.tripod.com for tons of great information like room location suggestions and a map of the resort so that you can select the best option based on
your interests. Some people want to be near the pool while others would prefer closer access to the food court for coffee in the morning.
Thanks so much for visiting us here at the Walt Disney World Moms Panel and feel free to send more questions my way in the days leading up to your trip!