Regular Conventional? 

We use Hospitable as our PMS for automated messages and calendar syncing, PriceLabs for dynamic pricing and market analysis, Minut for noise monitoring, Schlage Encode locks, Ring cameras, and the Google suite for shopping spreadsheets and owner monthly invoices.

Also, monitor current mortgage rates, as high rates can significantly impact your monthly payments.Your personal circumstances are also important.

This is why it is important to look at the market regularly and maintain an understanding of what prices are doing.When you are actively marketing a home, I recommend looking at the market every day or two.

So if I had to pick just 1 thing as "the" biggest thing in Commercial space to monitor for determining biggest impactors to market prices for MFH, without doubt it's COST OF CAPITAL. 

Sure if you dont have your own 3-5% down payment then yes use DPA if you really want to buy.After going over the pros and cons typically our FTHB'ers or first time home buyers end up getting a gift or bring in their own 1-2% down + 1-3% gift and end up with 3-5% down payment and borrow at regular FHA/conventional rates (avoid the DPA program rates).This is actual experience.

We have to constantly monitor both Airbnb and Guesty. 

He analyzes the data regularly and names the best locations to invest.

They use tools to monitor listings and may even check other booking sites to track this.

You should be able to refinance with any regular DSCR loan in this case.