DENVER — For nine years, Jill Bishop enjoyed the camaraderie of renting out her spare bedroom on Airbnb.
Guests hung out on her comfy sofas. They dined together. They shared her bathroom, which was filled with half-empty shampoo bottles and an array of lotions.
Then, things changed.
Airbnb urged Ms. Bishop to make the bathroom look more like a hotel. New local regulations governing Airbnb meant she had to start collecting city lodging taxes, which made her feel awkward when she had to ask guests for money. And Airbnb.....