MTT Resort

The MTT Resort is a hotel and entertainment center run by Mettaton at the end of Hotland. It houses a dine-in restaurant and the MTT-Brand Burger Emporium, where Burgerpants works. It is directly connected to the Core of the Underground. Bratty and Catty can be found in the alley to the right of the Resort.

Main Story
If the protagonist has not killed Papyrus, Sans will invite them to dinner at the Resort's restaurant, telling a story about how he contacted Toriel through the door separating the Ruins from the rest of the Underground. He says that they used to make bad jokes for a long time, and promised to her that he would protect any human entering the underground. In the True Pacifist Epilogue, the Resort is set to close indefinitely thanks to everyone leaving to the surface.

There are four doors to the right of the resort requesting room service: In the True Pacifist Epilogue, if items were never given to doors 1 or 3, interacting with them triggers the message "Room service never came. (Sigh...)"
 * Door 1: Sea Tea - Reward: 99 G
 * Door 2: Locked. The protagonist can sleep in this room for 200 G, yielding a similar effect to resting at Snowdin Inn. However, unlike the Snowdin Inn, The money will not be returned to them.
 * Door 3: Cinnamon Bun - Reward: 99 G
 * Door 4:
 * Hot Dog - Reward: Hush Puppy
 * Dog Residue - Reward: 2 Dog Residues
 * Hot Cat - No Reward (Prompts dog to growl)
 * Dog Salad - No Reward (Item is absorbed)

MTT-Brand Burger Emporium
Inside the resort is the MTT-Brand Burger Emporium, where Burgerpants can be found. Here, one can buy healing items that boost ratings during the fight against Mettaton EX

Trivia

 * There's a sign in the black void to the right of the hallway that advertises the Art Club Room.
 * The Mettaton fountain in the lobby has regular eyes instead of his usual grid-shaped screen.