The Room Service at Hampton Inn & Suites Austin-Downtown/Convention Center
The room service at Hampton Inn & Suites Austin Downtown is mentioned by professional reviewers. Out of 4 professionals that we tracked, 2 recommended the room service, including Frommer's and Oyster.
Hampton Inn & Suites Austin-Downtown/Convention Center 
Frommer's
Oyster
Frommer's "Room service can be had from either P"
Oyster "Rooms are spacious and attractively styled -- they have flat-screen TVs, mini-fridges, coffeemakers, and the hotel provides room service from two nearby restaurants"
