I would just take into account that a lower down payment will mean a higher monthly payment so be sure to run the numbers conservatively in order to ensure your STR revenue is able to carry your monthly payment with this higher mortgage cost. 

Even if it does, there's closing costs to consider.As I said, I have no cash myself, so I'm asking how I can deal with generating cash for closing costs (and a down payment) if it comes to it.The house costs $139000.

However, vacancy means covering 100% of the expenses.Multifamily properties almost always generate higher cash flow due to multiple income streams, which also reduces the risk of vacancies.

From my experience you should expect a 10% to 15% of gross revenue for repairs/maintenance. 

I had no money to put down on any properties, so I learned (a lot) and put in a lot of hard work and effort to get some properties under contract.Initially, I had no clue what I was doing, but I had the help of some people (and I appreciated that)I made mistakes that cost me around $30k (lost a deal due to my ignorance regarding title and escrow)The good news with wholesaling is that it doesn't take a lot of capital upfront, and you can start talking to sellers and learn about the industry in general.The other good news is that you can without a doubt generate revenue quickly if you do things correctly (having a good TC / title / escrow connection that keeps deals moving on the backend)That said, there are a few points that I've come to live by:1.

Leverage is key and will create generational wealth in less than 10 years.

Plus the 20%-30% more in gross revenue just goes towards utilities, furniture, etc.

Quote from @Brendan Jones: I am very new to learning about real estate and am looking for advice on my first home and how I can best use it to help offset my mortgage and generate cash flow.

I’m no longer house hacking, and all three units are rented out, generating a total of $8,200/month in rental income.

With the right PM, you’ll have peace of mind knowing your property is in good hands and generating steady income.Good luck with your search!