The key to exercise solutions in chapter 6 - Sorted! for the textbook Outcomes Upper-Intermediate - Student's Book with authors Hugh Dellar and Andrew Walkley from National Geographic Learning
Question
What's the worst problem? Why?
Answer
staying in a hotel: it’s really noisy / something doesn’t work / it’s not properly cleaned / things get stolen from your room
renting a room or a house: the landlord increases your rent / doesn’t give back the deposit when you leave / doesn’t fix things when asked to
sharing a room or a flat or house: your roommate / flatmate has disgusting habits / is noisy / takes things without asking / is always eating your food / never does their washing-up