So I stay in the nearby Marriott (Austin North) about 6 times a year, and this LongHorn is within walking distance. Their staff are without a fault super - Kevin has looked after me quite a few times and will remember your food preferences, subsitutions and they (incl the manager) are just lovely. I often eat alone and they make you fell so welcome.
The Chicken strawberry salad is to die for, as is their Flo's filet . The Wild West Shrimp appetiser is far too yum. I can also recommend the Perfect Margarita .
I have eaten in many of their Florida locations also - and whilst it is a very high standard chain, their Round Rock location is one of their best !