Questions & Answers about Rano je otišao iz hotela.
Why do we use otišao here instead of just išao?
Išao is the imperfective verb for "went" or "was going." Otišao is a perfective verb specifically meaning "left" or "departed" (a single, completed action). The prefix oti- adds the meaning of moving away from a starting point.
Why does the word je come before otišao? Could I say Rano otišao je iz hotela?
You can't put je at the end. Je is a clitic, which is a "weak" word that must take the second position in a sentence. The first position here is the adverb Rano, so je has to lock into that second slot, right before the main verb otišao.
Why do we use the preposition iz here instead of od for "from"?
You use iz when you are moving out from the inside of a place. Since he was staying inside the hotel, he went "out of" it (iz). You would use od if he was just standing next to the hotel and started walking away from its exterior.
What case is the word hotela in this sentence?