When I pull out a one-piece unit, I replace the tub with a new steel unit ( more durable ) , then have a (white) cultured marble surround put in.

At some point down the road, the inline image won't be up on flickr any more, and this whole thread will look a bit more awkward to somebody reading it for the first time.Some related BP links for your reading - you might get more ideas from people with similar issues:http://www.biggerpockets.com/forums/67/topics/78831-bathroom-window-and-tilehttp://www.biggerpockets.com/forums/67/topics/78694-ponding-on-shower-windowsillhttp://www.biggerpockets.com/forums/84/topics/60299-building-code-window-above-a-bathtubhttp://www.biggerpockets.com/forums/84/topics/66611-tub-surroundhttp://www.biggerpockets.com/forums/67/topics/78806-tiles-debonding--replace-all-or-just-somehttp://www.biggerpockets.com/forums/67/topics/79117-cultured-marble-price-questionhttp://www.biggerpockets.com/forums/67/topics/79001-building-a-bulletproof-bathroom-in-a-duplexhttp://www.biggerpockets.com/forums/52/topics/67384-porcelain-tile-or-fiberglass-for-rentalhttp://www.biggerpockets.com/forums/84/topics/51964-window-or-no-window-that-is-the-question

If you look at net migration patterns especially the senior population that is in the tens of millions and more most are moving to warm belt states.Some urban core areas of cold belt states are doing well but the burbs and rural locations in a lot of those areas are dying off.I would not be excited about investing in such places even if the prices were low for long term success.Their are local investors in cold belt states creating legacies investing in those areas that never plan to leave but for an outside investor looking for a possible target market it doesn't seem to make sense.

I always paid them off early and if you don't use the money it doesn't cost that much but in their mind you have a pattern of responsibility.I also got to know my insurance agent well and had her introduce me to loan reps from the insurance company.  

And try to come up with an intro that slightly catches them off guard, we call it a pattern interrupt. 

When I bought my first turnkeys (although I hesitate to say turnkeys because this isn't a turnkey-specific problem, it could be any rental property), things were good for a minute but it didn't take long before the tenants started following the same patterns yours did. 

This wouldn't by my first choice, but what about cutting the tile back and putting in a marble threshold like you would see at a bathroom.

Something I've seen done is to look at the listing agent's sales for the last 12 months, compare list price to closed sale price, and spot the pattern.

Want to be the guy with all the marbles, whom everyone respects and comes to, be a successful wholesaler and control the inventory for all the rehabbers and flippers or lazy investors who don't want to do the work to find good deals, and will have to pay you for your creativity and effort.

At some point farther down the road you'll realize a sub 5 cap on C is a rip off in any market AND you'll start to see patterns of expenses that are conveniently left out... a few being; payroll, extermination, turnover (different from M&R), reserves, etc.Little deals are easy to "mess up" as a buyer.