If it's somebody renting their flat or extra rooms then it's not a problem. I'm in a lovely Airbnb right now sitting in the beautiful back yard. The problem is

If it's somebody renting their flat or extra rooms then it's not a problem. I'm in a lovely Airbnb right now sitting in the beautiful back yard. The problem is when people have 10 apartments or whole houses cut up into rooms. This happens in Berlin. That is a professional operation avoiding professional costs. That isn't the market deciding, it's unfair competition by evading tax and insurance that a hotel must pay for. And it really is hurting locals in places like Berlin that have a severe shortage.