I treat my tenants like customers and try to provide them exceptional customer service, as opposed to the type of landlord who thinks they have a fiefdom and treat their tenants like peasants.

I treat my tenants kindly, honestly, and fairly, but I maintain a business relationship.

House hacking will complicate your tax return.Your property can be treated as both an investment property and a personal residence.

This would be treated as a flip most likely.

I've made what seems to be a common mistake by treating this as a hobby rather than a business.

Bad pics with low prices = bad guests booking at the last minute, likely treating your place like crap.

If you are here on BP, you're likely to be going into this endeavor with the correct mindset (business vs. hobby) and will thus treat all aspects with adequate levels of effort. 

You want to make sure to work with a CPA who understands how flips and long-term rentals are treated for tax purposes.You may want to search for a CPA either by attending a local REIA or asking for recommendations here on biggerpockets. good luck in your search!

And common areas are responsibility of all roommates. if something breaks in someone's non shared area, it is treated like a normal rental.

Plus usually cheaper than wood, since most of the "Treated Wood" is imported.