The only time you might need to get her to move is if it was a condo and having a kid living there permanently is against the condo rules (eg if there are age restrictions to living there, and yes I have a condo like that which is 55+ and guests under 55 can only stay for a max of 2 weeks).

1) No last minute bookings, must book at least X days in advance 2) Minimum ___ night stay (I used 2, some do more)3) Must have at least ___ previous stays 4) Must have ___ previous good reviews, no less than __ stars5) No guests under age ____ (I used 30)

Considering the local anti landlord laws what would be the best way to handle this to avoid any potential issues from the legal perspective?

This business doesn't discriminate against age, race or gender. 

Similarly, if the property has experienced depreciation due to age or wear and tear, provide evidence of this deterioration.Income and Expense Analysis: Prepare a detailed income and expense analysis to demonstrate the property's financial performance.

While many people my age are barely surviving, or still living at home, I took huge risks, saved diligently, read everything I could get my hands on.

Read some books (preferably books written before the internet age), and apply the wisdom that has worked for thousands of years: earn, save, invest.

I'm bullish long term as I know a lot of folks my age who are excited to be back in office, even in the tech startup space.

Married kids, kids ages.2.  

Since everybody coming into "house buying age" received a trophy for showing up, from elementary school age to now, they feel entitled to receive without putting in the work.