The AT&T hotel and Conference Center is located on the edge of The University of Texas at Austin campus, and within walking distance of the state capitol building and downtown Austin. See the map on the "Venue & Accommodations" page of the SISPAD website, http://www.sispad2018.org/venue--accommodations.html.
For a few things to do in Austin beyond the conference, see, e.g., travel.usnews.com/Austin_TX/Things_To_Do/. Most items on the list are on Campus, Downtown or in between, and all are within walking distance of the AT&T Center. The rest also can be reached by walking if you have the time and don't mind extending your walk onto hike and bike trails along the Lady Bird Lake and through Zikler Park. Of course, taxis and ride-sharing services can make for faster trips.
Austin has been rated the best place to live in the USA among the 125 most populous metropolitan areas for the last two years (2017 and 2018) by the US News and World reports realestate.usnews.com/places/texas/austin.
For additional information about Austin, an excerpt is provided from its Wikipedia page, https://en.wikipedia.org/wiki/Austin,_Texas, with references provide therein:
Austin is the capital of the U.S. state of Texas and the seat of Travis County, with portions extending into Hays and Williamson counties. It is the 11th-most populous city in the United States and the 4th-most populous city in Texas. It is also the fastest growing large city in the United States, the second most populous state capital after Phoenix, Arizona, and the southernmost state capital in the contiguous 48 states. As of the Census Bureau's July 1, 2017 estimate, Austin had a population of 950,715, up from 790,491 at the 2010 census. Located in Central Texas within the greater Texas Hill Country, the city is home to numerous lakes, rivers, and waterways, including Lady Bird Lake, Barton Springs, McKinney Falls, the Colorado River, Lake Travis, and Lake Walter E. Long. It is the cultural and economic center of the Austin–Round Rock metropolitan statistical area, which had an estimated population of 2,056,405 as of July 1, 2016.
In the 1830s, pioneers began to settle the area in central Austin along the Colorado River. In 1839, the site was chosen to replace Houston as the capital of the Republic of Texas and was incorporated under the name "Waterloo". Shortly afterward, the name was changed to Austin in honor of Stephen F. Austin, the "Father of Texas" and the republic's first secretary of state. The city grew throughout the 19th century and became a center for government and education with the construction of the Texas State Capitol and the University of Texas at Austin. After a lull in growth from the Great Depression, Austin resumed its development into a major city, and by the 1980s it emerged as a center for technology and business. A number of Fortune 500 companies have headquarters or regional offices in Austin, including Amazon.com, Apple Inc., Cisco, eBay, General Motors, Google, IBM, Intel, Oracle Corporation, Paypal, Texas Instruments, 3M, and Whole Foods Market. Dell's worldwide headquarters is located in nearby Round Rock, a suburb of Austin.
Residents of Austin are known as Austinites. They include a diverse mix of government employees, college students, musicians, high-tech workers, and blue-collar workers. The city's official slogan promotes Austin as "The Live Music Capital of the World", a reference to the city's many musicians and live music venues, as well as the long-running PBS TV concert series Austin City Limits. The city also adopted "Silicon Hills" as a nickname in the 1990s due to a rapid influx of technology and development companies. In recent years, some Austinites have adopted the unofficial slogan "Keep Austin Weird", which refers to the desire to protect small, unique, and local businesses from being overrun by large corporations. In the late 19th century, Austin was known as the "City of the Violet Crown", because of the colorful glow of light across the hills just after sunset. Even today, many Austin businesses use the term "Violet Crown" in their name. Austin is known as a "clean-air city" for its stringent no-smoking ordinances that apply to all public places and buildings, including restaurants and bars.
U.S. News & World Report named Austin the #1 place to live in the U.S. for 2017. In 2016, Forbes ranked Austin #1 on its "Cities of the Future" list, then in 2017 placed Austin #1 on its list for the "Next Biggest Boom Town in the U.S." Also in 2017, Forbes awarded the South River City neighborhood of Austin its #2 ranking for "Best Cities and Neighborhoods for Millennials". WalletHub named Austin the #6 best place in the country to live for 2017. The FBI ranked Austin as the #2 safest major city in the U.S. for 2012.