1. Making A Huge Mess

Making a mess in a hotel room during your stay not only affects the space's comfort and cleanliness but also reflects negatively on your consideration of hotel workers and other visitors. Leaving dispersed belongings and spilling food and beverages without cleaning up can result in extra work for hotel staff.
If you've ordered room service or partied in your room, at the very least, arrange your dinnerware and empties in order. It not only contributes to a more pleasant experience for yourself but also upholds the standards of hospitality of any accommodations.