This is THE way to see Aswan in style - bargain hard with the guys along the river (and then give them a decent tip afterwards - you'll both feel better) and then sit back for a peaceful journey gliding between the islands dotted around the Nile.
Elephantine island has a Nubian village and the remains of ancient Memphis, while the flora on Kitchener Island is stunning. The far side of the Nile, meanwhile, is golden desert as far as the eye can see.