Most of the answers you seek are market specific. I operate a number of short term/vacation rentals in the Colorado Springs area, both my own and others and have run numbers on properties for lots of investors. Rather than try to answer your questions with numbers because answers will so dependent on your market, here are some costs that you should consider categorically that you might not be thinking of from your experience with long term rentals:
- Insurance (that covers STR activity--not just any landlord policy)
- Utilities (including internet and possible streaming services at minimum)
- Hot tub maintenance if applicable
- Replenishables (paper towles, coffee, etc)
- Laundry service (maybe this is bundled with cleaning)
- STR specific taxes in addition to property tax
- Trash/recycle
- Yard care, snow removal
- Licensing cost from your city if applicable
Hope that helps! Have fun; STRs can be a great experience and definitely can be a great way to turbo your cash flow even if you are buying in a hot market. Using the property for yourself is fun too!