Hotels across the country are rushing to introduce robots with the promise of enhancing the guest experience and increasing efficiency. The automated companions can do everything from make and pick up deliveries to help guests find their way around.

Aloft Cupertino in the Silicon Valley (rates from $150) was the first hotel in the United States to debut Savioke’s Relay robot in 2014. The three foot tall autonomous robot, nicknamed Botlr, weighs 90 pounds and makes deliveries throughout the hotel using multiple sensors, 3D cameras and Wi-Fi to operate the elevators. Marriott has since begun mobile robot service at four other Aloft properties.

“Botlr’s most popular guest deliveries are forgotten toiletry items, bottled water, microwave popcorn and coloring books for kids — all complimentary, of course,” said Andy Evers, Aloft Cupertino’s general manager.

Other hotels are following suit. H Hotel Los Angeles’s Relay robot, named Hannah, made 610 front desk deliveries and 42 room service deliveries, traveling a total of 50 miles, in the first three months since the hotel opened last October (rates from $249). “It’s a great timesaver for our team because no one has to leave their station to make a delivery,” said Tiffany Jassel, a manager. The robot cruises at a speed of 1.7 miles per hour and has a two-cubic-foot bin to carry items, which guests unlock by typing in a code on its 7-inch touch-screen. When a delivery is complete, the robot celebrates with a swivel dance and chirpy sounds.