i'm sure by now i have the record for most questions asked by a newbie.....

I don't ask for a specific address right off the bat, I don't want to spook her.  What I will do is ask for a nearby cross street or some sort of landmark, restaurant or business so the GPS can at least get me going in the right direction.  They usually won't have a problem with that.

give you a general area to go to.  Once there, you call for the direct address.  In your case, having to drive a long way, it is inconvenient, but remember, it's for their safety.

i understand.   i like the other reply, ask for a cross roads, restaurant, or other landmark to get me a general idea of time...

If you explain that many will get you close to them on the first call. If you are repeating with someone you liked, often they will give you the location so you just need a room number when you arrive.
 

...then I get the room # or apt # as I arrive.
I'm a little in the stone age re technology, so I actually print out my directions at home before heading out (I'm single, so no problem with this).  I guess if I start encounterinng ladies who won't give the address early, I might have to finally join the rest of you in the 21st Century, lol.

estimate time; it was a small local library.  Once there, I called her and she guided me a few blocks to her incall location.