This great place is not easy to reach but it is really worth the trip.
At the bottom of the canyon there is a small village by the name of Supai, and from there you can have some of great short hikes to a set of amazing waterfalls. To reach the supai village you will need to reserve in advance (months in advance) a room at teh lodge (only one it the village) or at the campground located near havasu falls (2 miles away from Supai village) – they never replied my emails so best is to call (and call, and call as they are hard to reach) - here, its better to reserve at least 2 nights since one night will only allow u to get in and out and see nothing in between.
Once you have your nights reserved you need to get to “Hualapai hilltop” (from road 66 you take Hualapai hilltop hwy for 60 miles) you park at the end of the road and start hiking down, 10 miles later you reach the village and from that you can visit the falls (hikes range from 1.5-8 miles)
When you need to hike back it is always good to leave very early as most of the hike is easy, flat and only the 2 last miles back up to the parking area are the tough part – you dont want to do it in full sun, get out of the village with headlights and try to reach your car before 9 AM.
We chose to hike all the way down and back up with small backpacks with only what we really needed for 2 days and water, but there are other ways to get down, either on horses or by helicopter (no reservations, village residence and suppliers get priority over tourists), you can also hike down and have your gear brought to you by horses if you want.