There is ample amount of camping onsite at Indian Mound Ranch.
If you want a hotel room nearby, Tejas Trails recommends you book your hotel through this booking portal: 
Hotels for Hope

The closest towns to look in are going to be:
Georgetown, Leander, Cedar Park, Round Rock, and Austin.

If you were to use Hotels for Hope, not only will you receive a discounted rate through this booking portal, 
but your hotel reservations will make a difference in someone's life! 
Every room night booked generates a $2 donation to fund a cool organization. 
Tejas Trails has chosen "Kids in a New Groove" as the organization to benefit from this cool service. 
You also receive discounted rates at the hotels offered through this booking portal.

Kids in a New Groove (KING) 
provides Texas youth in foster care
with a committed one-on-one mentoring relationship through weekly private music instruction, 
in turn giving students the ability to build concrete strategies for life-long success. 
Kids in a New Groove’s vision is that all Texas youth in foster care
have the tools and support they need to become successful individuals when they transition out of the foster care system.

For $1,000, a child in care not only receives a year of music lessons and a new instrument, 
but also a dedicated music mentor who builds a lasting relationship of support and encouragement. 
This RoomFunding Project will fund 14 children for a year in the mentorship program.