@Ankush R.Recommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

Don't accurately represent the neighborhood/property classification.Don't have consistent rehab standards for all propertiesDon't provide a scope of work for the renovation that they have done.Are they a turn-key company or are they a promoter?

What are the top amenities in the area for the high performing STRs?

Your 30-50% is pretty accurate here. 

Consider getting contractor bids during your inspection period to have more accurate numbers.3.

Hi everyone,I’m conducting some research on what impacts the performance of vacation rental properties the most.

I’m using funds from a 1031 exchange for the deposit.Can anyone provide insights or guide me on how to refine my underwriting or ask the right questions to ensure my numbers are accurate and this is a solid deal?

However, there doesn’t seem to be (in general) a more consistent performer as to appreciation than the SFR. 

I’ve encountered managers who were fantastic in most areas but lacked in one or two key traits, and that was enough to impact the performance of the property.

Also @Tim Phillips something to be aware of in FL, all condos older than 30 years and taller than 3 stories are required to have a "Structural Integrity Reserve Study" performed before the end of this year.