I know its almost 2 months since your post but...for future reference, Check out San Antonio, Texas. I didnt think much of it when I was told I would be going, but I stayed on the Riverwalk and really enjoyed it. I was there for 11 days and alone every evening except for 1, and was out every evening eating, drinking and being merry. Lots to see and do along the river and in the Alamo area and it seemed very safe as well. It would be a good quickie trip, I plan on going back in the spring!