At $30 - $50 per day you are a hostel/hotel + private party. Your friends spend as much on bars while with you they can sleep over and the next day drive safely home.
Girlfriends can invite their girlfriends to their own place and have a party to gossip about boys, drink some free cava, sleep over and get back home the next day, they can also sell or exchange clothing.
This is an easy way to make $1,000+ per month for guys and girls who have only a one-bedroom appartment or who can not afford to pay their rent.
If you don't want to throw a daily party, you can simply promote your bedroom appartment for sleep-over only at $10-$20-$30 per night.