Separately metered gas & electric are generally viewed as more valuable because water is less commonly metered.

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

I am launching my first STR and I was wandering what are the most common site for bookings besides Air b n b and what are their pros and cons. 

However Property tax's some of the lowest in the coutnry and property maintenance same thing if you buy a stucco home with a tile roof.No real major weather threats like many markets  IE hail storms wind storms etc.. can get windy but thats common.. 

And how common is this approach? 

There are a lot of issues with having JADU including finance issues if there is also an ADU, requirement for owner occupancy, that it removes space from the primary structure and usually lowering the value of the property such that it is common practice to remove the JADU when selling the property.  

With my experience with very wealthy individuals who have complete freedom of time, one common denominator is: Keep it simple and a little boring. 

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

Are there some lease terms that are common for commercial real estate that I should try to get included?

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