Would fabricated or manufactured housing count as an ADU to build, rent and possibly sell under this new law? 

Rent a jack hammer.

In July, the U.S. apartment market witnessed a slight uptick in rent growth, reflecting robust demand that has persisted throughout the summer.

Second, with a better location it has been much easier to rent and we receive higher rents.

I would also do this for rents.

Right now, we’ve been able to keep rooms rented as we turnover the empty ones, but I am having trouble figuring out if this is the best strategy. 

They wonder why the property doesn’t rent quickly and can’t command top market rent when the kitchen and baths are dated, and the property overall vibe/aesthetic is lacking luster. 

At the end of the conversation, I'd ask with a chuckle, "Would you rent to them?"

Hi, I am brand new to real estate investing and need some assistance understanding price to rent ratios.  

Multifamily properties, like duplexes, can be particularly appealing because they allow you to live in one unit and rent out the other, which helps with covering the mortgage while also generating income.Another option is to invest out-of-state in markets where property prices are more reasonable but still offer great cash flow.