Final answer:
The correct word to complete the sentence is 'un hotel.' It means 'a hotel' in English.
Step-by-step explanation:
The correct word to complete the sentence is un hotel.
Me quedo en un hotel cuando viajo.
This sentence translates to 'I stay in a hotel when I travel.' The word 'hotel' in Spanish is 'hotel', and it is masculine. Therefore, the correct form of the word is 'un hotel'.
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