I mean, your whole market position could quite lucratively revolve around the “seamier” side of things. That could be your niche! Dealing might not be so nice but hookups (ahem, let’s call them “private couple retreats”) can make for good guests. Parties could be a problem, though. Are you near enough to monitor this?
Here’s my experience: short stays can reduce your chance of filling up the calendar with longer stays, and result in fewer nights booked overall. This isn’t just about turnover times. Say someone books Saturday night. You might still end up with someone who wants to stay Friday night. But you miss out on all the people who wanted to stay Wednesday through Sunday.
We used to have 2-night minimums because our property manager when we first launched our listing said it was the best way to get bookings and build a reputation / get reviews. That’s true. But then one night, someone contacted me asking me to approve a one-night booking on the weekend. This was in summer, peak season when our flat went for $250/night. How could I say no to $250? But if she booked for that one night, I’d miss out on any longer bookings that included the weekend. While I was trying to decide, literally 5 minutes after the first request came through, someone else instabooked for 5 nights (thus invalidating the 1-night booking request). So I lost the $250 booking and ended up with over $1000, and less cleaning hassle, too.
After that, I experimented with making my minimum stay 5 nights. I was surprised to find that there was a lot of demand for that, and I never regretted it!
It really depends a lot on your local market. You could always experiment to see what works.
But also, keep in mind you can do a mix of things. You could, for example, open up your calendar for three months in advance with longer minimum stays. Then, 1 month or 2 weeks out, you could open up any unbooked nights for shorter stays. In my limited experience, shorter stays are more likely to be spontaneous weekends away and longer trips tend to be planned well in advance.
And you can customise your calendar and rules around longer bookings. For example, if I have 2 x 5-day bookings with 3 days in between, I can go into the calendar and set special rules for those 3 days to allow someone to book a shorter stay in between the longer booking.