The property in question has been carefully evaluated for its potential return on investment, and I believe it presents a unique opportunity for profit.

Definitely a unique market, I love it!

We both have degrees in graphic design and work for Universal designing theme parks (with some on-site experience for both of us).

Something local, anything unique, and Instagramable walls! 

Along with my 2 business partners I buy & build small micro-resorts and unique vacation rentals across the Appalachian region.

I think some of your exit strategies could be to reposition and add some unique features to your rental to attract more renters and potentially drive a higher price, 1031 exchange and move it to a different area or even market.

And I got it kitted out for short term rentals with a theme, took bright photos that aligned with a YouTube video I found on taking great room photos, and I was off and running.

Your profile and post mentions Philadelphia and New Jersey.There are unique tax implications between those who live and work in another states as there is a reciprocal agreement between the two states.

If your market is showing SF zoned comps for a ADU addition that match or exceed hands off cost of adding a ground up single ADU, your market would be rare if not unique for CA. 

While it can be very lucrative, it comes with its own set of unique challenges.