Don't know what size pup your looking for but even the 12 ft Saratoga by Fleetwood has a bathroom in it (which if you use it you will need to drain it) and two beds
Any kids going? table drops into a bed too
FTCA, Inc. | Camping Trailers | Camping Pop Up Trailer | Folding Trailers
the site also shows how to set one up if you never have. The door can be tricky.
Brazos is "away" from Houston but I understand. I guess it comes down to what one wants when they get away, we prefer a hike/walk a bike ride or a swim in the park when we are out. Others have Yaks or tubes, fishing poles or boats and other forms of fun. We like sites to see but don't often go out more than one day to see them.