For me, It is the down season. The quality of my guests is lower. I'm more desparate and there is a general feeling of blah that comes from low activity. I'm also competitivilty priced to flea bag hotels rooms right now, which is very risky.
@Augusto93, I love what you offer. You provide clean, simple cheap housing.
Because you have a unique offering. most hosts here wouldn't give you good suggestions, because we rent out private rooms.
The easiest way to reduce your risk of low quality guests is to follow the "standard".
How do you compare to other shared housing? Is your pricing in the middle/higher range of the competition? How do other hostels demand higher quality guests? Do you accept brand new guests with no recommendations?
Consider replacing your taco picture with your face picture.
If it is the low season, consider experimenting renting out private rooms with a higher price.