I'm an airbnb superhost with more than 60 visits during the past 3 years, and I've never had any issues with any of my guests so far. That has made my trust in people really high. I love the fact that all the people I meet, from many different countries, return my trust. I wish I could say the same about Sam and friends. I hope they'll learn it as they grow older.
I had my cleaning lady clean the apartment the day before Sam's group arrived, so it was very clean. I would never intrude in any of my guests stay, without calling first. The issue here was several complaints from my very sweet and reasonable neighbours.
Sam and his group wrote on walls, drank my beers and my alcohol, and then filled up my bottles with water. I would never dream to call people and yell at them. I could go on but I won't. I won't recommend Sam and his friend to anyone.