Buying a large new build home can also work well as a house hack as you can charge a premium rent, and generally most bedrooms built now a days have en suites (at least in my market).  

That was just one of my properties and I now have multiple in different vacation locations.  

The rent from this property covers the mortgage.

I think this question is dependent upon location.

Deposit rent into checking account, transfer excess funds into brokerage account, make money. 

My current agent suggested if it made sense financially, to do some rehab work to get the properties rent-ready, but I do not have the liquid funds to do so and sell these as-is.

The tenant fails to pay their last month's rent and leaves the place needing new flooring and paint.

My idea is to get an apartment and make sure it’s okay with the owner to rent it out as an Airbnb.

If you can’t find something with significantly better returns, holding might be your best option.Alternative to sellingIf you’re hesitant to sell but want to improve returns, check if the current rent is at market rate.

@Garry LawrenceDevin Moreno has a bunch of videos on rent-by-the-room strategy in Baltimore on hisYoutube channel.