3. for 10+ property owners - does this pattern change, or you are diversified enough?

It is part of a pattern that you see with some tenant-they push a little, get away with it and then it escalates. 

I wouldn't put carpet back in it; laminate wood grain will cost ~ $0.77 SF and 12' wide tile pattern vinyl sheet ~ $0.49 SF plus installation. 30x80 interior door slabs: smooth hollow primed $44; six panel hollow primed $54; either will require cutting/installing the lockset and mortising for hinges (handyman work).

Well, in Wisconsin, the following statement is one condition that defines a real estate broker:Wisconsin Chapter 452.01(2)(b)Is engaged wholly or in part in the business of selling or exchanging interests or estates in real estate or businesses, including businesses' goodwill, inventory, or fixtures, whether or not the business includes real property, to the extent that a pattern of sales or exchanges is established, whether or not the person owns the real estate or businesses.

With MMA or boxing if you don't knock them out you are leaving your chances with the judges scoring.Pacman could have knocked him out and didn't.A rematch will show if it was a fluke or not.Every fighter has an off day no matter who it is.Lose once = off day.Lose twice = pattern happening.

instead of tile you will want travertine or marble.

Steve T. you are somewhat correct in your assessment however while the characterization of a neighborhood from good to bad is also subjective the rents in relationship to the cost to get in do follow this pattern.

If you leave earnings to accumulate in a C Corp thinking you're getting around the double taxation, you'll eventually learn about the accumulated earnings tax...C Corp make sense under very limited fact patterns...e.g. foreign owners, owners that want heavy fringe benefits, silicon valley types that envision a 1202 stock sale exit strategy, etc. 

Take airdna.co data with a whole shaker of salt - it can be useful for seeing patterns in the area, but their numbers re: nightly rates, occupancy % etc. are not at all reliable.

Currently in a holding pattern as far as expansion, but my niche is low income buy and hold.