San Antonio is one of my favorite cities to visit and relax, my wife and I go a few times a year. Stay on the riverwalk or close by, lots of great places to eat. If it's a nice day, Casa Rio is a great place to sit outide on the riverwalk, drink margaritas and people watch, it's a short walk to the Alamo. The Menger Hotel is across the street from the Alamo. it is old so the rooms are a little small but it is an interesting place. Teddy Roosevelt recruited the Rough riders there and Cary Nation tried to chop the bar up with an axe. Supposed to be haunted but I've stayed and never seen a ghost. Go to El Mercado in the morning for breakfast at Mi Tierra, the breakfasts are incredible. Hope you have fun. My offices are in Houston, let me know when you are coming and if I'm in town I can meet you for dinner