My house has 3 stories, had a lovely Italian man stay on the bottom level , we could hear him in the attic when asleep, between the releasing of gas and snoring. The children thought it was so funny until it was 1.30 am and they started looking like vampires with bloody eyes, he was with us for a week. He was gentleman and one could never mention anything we heard at night. I supply ear plugs for all guests in my emergency box in each room and smart TV’s to be them busy in case they can’t sleep.
One of my first guests complained she heard children playing in a garden close by , I often wonder what did she think I was going to do, it was summer time and they were playing ball. Our bodies are used to the sounds in our home environment and it can be distracting when in a new location. My house is close to the train, when we moved I thought I would never sleep again as I almost waiting for the sound to annoy me, 2 weeks later, my body had adjusted and I never noticed the sound again