We want to spend 3-4 days with our grandkids 4 and 6 years 3rd week in June. We were thinking of the Hill Country. Would the San Marcos area be a good base? Some nice scenery with an opportunity of some outdoor activities is on our list of priorities, definitely not the outlet malls. It's not clear from the research I have been able to find whether San Marcos is in the Hill country or not. We'd also like to include a day trip to San Antonio. Or are we better of being based in San Antonio and driving out to the Hill country - or any other suggestions? We want to be no more than about 3 hours' drive from Houston to our base, but don't mind driving out up to an hour for day trips.
Any advice gratefully received.