Quote from @Marc Shin: For my STR, should I be using waterproof LVP or regular tiles for the bathroom floors?   

It would involve putting an external staircase on the side of the house and making the second bathroom into a full bath.

Try looking into zillow/Redfin and see what your potential rents you can get near the neighborhood by filtering the bedrooms/bathrooms of the intentional property that you are planning to buy.

I know they told you that you can sneak in a basement bathroom, but you can't.

My neighbor is renting her Jr.attached ADU: 2 bedroom, 1 bathroom, 825sq -furnished- $2500/mo (utilities incl./ current tenant renting for 6mo).LOFTI have plenty of land for detached ADU /their own yard, driveway & entry with the goal of a 1 bedroom/1 full bathroom downstairs & a bedroom/powder room upstairs <so 1 & 1/4 bath>...

I guarantee Musk cares more about his money, property, kids, and bathroom floor than the hired help, but that doesn't mean he is better suited for the job or that he has the time, skills, and energy to handle it.Maybe you're part of the small percentage that can do a better job.

Bathrooms or bedroom add ons).

the place came w/ a fully liveable basement, including kitchen, shower bathroom the rooms have windows.  

Upgraded kitchens, bathrooms, and other items that hadn't been touched for years What was the outcome?

the kitchen,fridge and bathrooms are disgusting and it is damaging the properties.