Many years ago in Houston there was one that was 3 foot 6, all of 85 lbs that worked out of a hotel off I-10.
The standing BJ was more than doable & if need be she had some phone books for either you to stand on if you were under 5'8" or tall enough she needed them.
Position wise she could get into all of them easy. You might see some posted on Listcrawler but odds are they are scammers.