We stayed at the Yangshuo Mountain Retreat. It's very basic but we had a room with a balcony and the view was spectacular. The lodge arranged for drivers to the airport and elsewhere; I think most of the Yangshuo area lodges can readily do this for you. There may be a better or cheaper way, but we were short on time and it worked for us.

OP: you might consider a day trip to the Longsheng Rice Terraces (you can get a driver to take you to Ping An and wait for you). We enjoyed our hike there. There's also a hiking or biking trail along one segment of the Li River between Guilin and Yangshuo that we heard about but didn't do. In addition to the big boat trip to Yangshuo, you can arrange for much smaller boats on shorter segments of the Li (we took a small boat from Yangdi to Xingping and loved it).