"Mi pasaporte está en el hotel."
Translation:My passport is in the hotel.
One of the uses of "estar" is to describe location of people or things. Here we are talking about the location of the passport.
"Ser" is used when talking about the location of an event.
See studyspanish.com (Grammar Unit Two) for information and practice with ser/estar.
A little rhyme i learned was "how you feel, and where you are is when you use the verb estar" it helped me remember
I like how duolingo teaches because you slowly learn the words and then how to build sentences
Nothing, really. But its not exact to the translation. Putting 's on the end of a word (short for is), is just a sort of informal way of speeding up what we're saying (like that), and is just more comfortable for us. Duo is just wanting us to be formal and more exact.
Nothing. This is a new lesson, so they probably havent set it to accept all of the answers that it should. Report it.
Anyone else type it correctly and it still said it was wrong? Gracias mi amigos