I will take this advice into consideration.

What is the easiest way to connect with those who have actually invested in this fund and find out their experience?

My interest rate and purchase price wouldn’t allow for positive cash flow unless I charged an unreasonable rent—or put about $500K toward the principal, which isn't ideal.I’m a high earner, so I’m weighing my options:Take the loss ($60K-$100K), buy another house, and chalk this up to a hard lesson learned.Refinance, put more money into it, and rent it out long-term—even if it’s not immediately profitable.Invest my money elsewhere and try to make peace with staying here for several years.Would love to hear thoughts from anyone with experience in real estate, financial strategy, or noise mitigation.

In my experience one of my biggest lessons learned when dealing with older properties always expect more than you initially thought. 

You can also not include those extra spaces, and then you simply have some association spaces that are excluded from calculating the percentage.In my admittedly limited involvement with the leasing exhibits etc, my experience has been that again it depends.

I’d love to connect with others who are house hacking or rehabbing in the area and share experiences.

Quote from @Tony Lopez: You are in the most regulated corner of the world and have zero experience.

I have year of 7 years of experience with drywall, and paint work so that helped me out a ton.

When you have the confidence & experience branch out and do one yourself.

I have no experience with command strips.