I've riden this section both on the bike and in a car. Its quite a tight, twisty and undulating piece of road. The surface is in good condition but there are a lot of bobbles in the road, these are more due to the type of countryside it runs through than the surface being neglected. It runs through some nice scenery but the road demands your attenion so you dont get a lot of time to take it all in. During periods of rain it can get very slippery in places as some sections run under a shroud of trees and there are places where fallen leaves can cover the road.
An interesting combination of nice corners through quite a nice part of the country. Can be quite busy with tourist traffic during nice weather/holiday periods.
Leaving the A590 at Gilpin Bridge the route starts with a number of long straights with reasonably tight corners - good vision and well fast. Once through the Esses near the farm at Row the road becomes more undulating and the corners more varied. The further you go the tighter and more twisty it becomes - watch out for the jumps near Crossthwaite. The final section into Bowness has a poor surface in places but is still good to ride.