The Innkeepers

From the Super Mario Wiki

In Super Paper Mario, there are two inkeepers, Tinga and Inga. Both let Mario, Peach, Bowser, and Luigi stay a night at their inns for a cost. They are not sisters but rather counterparts, living in opposite locations in Flipside and Flopside.

[edit] Tinga

Tinga is the innkeeper from Flipside. As said in Tippi's/Tiptron's tattle, she is a hard worker and never lacks a smile on her face, even when The Void is about to engulf all the worlds. Her inn used to be her family's mansion, but she has remodeled it into an inn ever since she inherited it. Tinga lets the heroes stay for only 5 coins a night.

[edit] Inga

Inga is the innkeeper from Flopside. According to Tippi's/Tiptron's tattle, she is cunning and always has a sly smile on her face. She also wants to run a string of hotels and become the number one hotelier. Her inn looks like a haunted mansion, only it has a spinning electric fan on the ceiling. She will let the heroes stay for 10, 20, or 40 coins a night. This reason is because she also sells breakfast, and the heroes must purchase either the Mushroom package, the Flower package, or the Star package to stay. In the morning, Inga says she has make their breakfast, but won't reveal where it is. Mario must use his 3-D flip to find it. It is notable that accepting her 40-coin breakfast is the only way to obtain a Slimy Shroom in the entire game.