This is a twelve-mile run on the Colorado River from Hoover Dam to Willow Beach through Black Canyon. The water runs steady with a short area of fast water, no rapids at all. There are many places to stop along the way including; caves (emerald cave is the best), warm springs and waterfalls, petraglyphs, climbing and hiking, sandy beach for relaxing and camping. I have gone down twice and both times saw bighorn sheep drinking along the shoreline. It is a refreshing surprise and I know you will have a great time.
None on the river until you get to Willow Beach which has a restaurant and other facilities.
Look in the Vegas phone book for outfitters and they will make all the arrangements. It not expensive, I think about $35.00 which includes kayak rental and river fees.
From Las Vegas south to Boulder City and follow signs to Hoover Dam.