Diane-
I won't disagree with the directions above, they are the closest way in. Unless you are coming in on a Sunday, I would exit I-10 at the Beltway 8 (Sam Houston Tollway). The tollway is about 10 miles further to drive and will cost you $9. The traffic will be considerably less than the trip from downtown Houston on 59. We do not travel into or out of downtown on 59 unless absolutely mandatory and we live 50 miles from downtown Houston.
If you choose the Belway 8 route you will need to exit the tollway at W. Bellfort and drive the service road to 59 and turn right on the 59 service road, PPL is just around the corner after you turn back north.
Here is a link that will give directions and let you choose your route.
http://www.pplmotorhomes.com/gotopage/map.htm
Lots of luck coming into Houston.
Charlie
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