If the property breaks even, or operates in the red currently, it will only operate deeper in the negative (unless you find a strong ROI like creating more bedrooms, convert a non living space to living space, etc) with another loan. 

The operator may trade off the longer term benefits to keep a high quality tenant in place.

Learn about the Net Operating Income (NOI) and Capitalization Rate (Cap Rate)—these are essential to analyzing the potential profitability of a property.Return on Investment (ROI): There are different ways to calculate ROI in real estate, such as looking at your total return after a sale or assessing your rental income versus initial investment.

Quote from @Jesse Valdez: When operating a business, it pays to know the laws.In most states, guests staying fewer than 30 days can be removed by police for failure to pay rent or obey the rules.

This isn't 2011-2013 days but many people are stuck in that time period STILL.As I finish my licensing study, I'm very grateful I chose this route as opposed to being a one trick pony.Wholesalers did themselves in by their method of operating.  

If you’re ever looking to invest in Florida, @Josh Green has a successful STR operations going on in the Tampa Bay Area that is providing his clients with solid returns year round.

Gita,At least the way I prefer to do things is to only run accrual based accounting activity on my day to day operations.

What is the T12 Net Operating Income? 

If one or more units are vacant, the remaining units often don’t provide enough cash flow to cover expenses, making it harder to meet operating costs.Maintenance costs: A fourplex comes with four times the appliances, plumbing, HVAC systems, and other components to maintain, leading to significantly higher repair and maintenance expenses than single-family homes.If you want to see the detailed calculation, read this BP blog - More Units Doesn’t Mean More Money—Why a Single-Family Home Can Beat a Fourplex.Resale value: Multi-family properties have a limited buyer pool—mainly investors—who base their offers on CAP rates.

This is the kind of thing the bank you keep all your operating funds in should be happy to help you with.