A couple that I personally liked were The 10x Rule, Rise and Grind and The Power of Broke.

I just did my entire rental with the Lifeproof planks....its really easy to work with.You can easily trim/grind/file the material to fit tight up to the edge of the tub.....its just going to be tedious to do.

If you feel they are risky and you may have to get rid of them for some other reason (poor housekeeping, noise complaints, or other lease violations) then a month-to-month makes that a little easier.

Keep grinding it out; you'll find the people you need. 

If you have scale with residential hundreds to thousands of units they usually you can build in layers of people and scale to have them handle the day to day grind of constant issues from tenants.I just would not want to have to choose my choice of giving up my soul and humanity for the almighty dollar.

Do you have much concern of noise impact on weekends? 

Would this also reduce the noise between the units?

Since that's the way it goes I tend to minimize my pre-emptive improvements and grind them out with the buyer in the inspection portion of the negotiations. 

Too much wear and tear on the property, too much nuisance with noise and cars going through (drop off and pick up).Wait for someone else. 

The upstairs tenant said the lower tenants moved out because of water damage coming from the tub upstairs that the landlord never resolved and because of kids running around and making too much noise.