One hour in each direction of where you live will surely have similar opportunities and a much higher learning cycle for you.

It’s not unusual for a lease to end a week earlier than a typical monthly cycle, as this can accommodate a tenant's personal schedule or preferences.

One option you might try is to go to Bi- Weekly Payments, this way you collect on the same cycle as their paychecks.As long as both of your tenants still have their jobs, I would ride it out, the 2nd thing is how are they maintaining the property, are you going to have to spend thousands of dollars on repairs because of damage to the property.

It may be a difficult game to get into in 20 years, yet many will find a way and the cycle will continue, so long as the US is still standing.Ultimately, none of us has a crystal ball, we can only look at history.Conversations like these have been going on since the dawn of man and will continue. 

You'll feel better yes, but success will most likely not be attained.Instead I entice you to start being smart, start thinking, start analytically dissecting theories and opinions and validate them with logic and proof.

I finally decided to close the doors mainly because the unit used was not available anymore, but also because the regulations got stricker and stricker over time.Now, if you want to use your 2-4 as an STR, you need to show proof that you are living in the unit you are renting by sharing a government-issued ID with that exact unit or your tax exemption form.If you have a building over 5 units, it's a bit easier but still challenging ( you can rent up to 25% of the units out for airbnb)...the few people I know that are successful are NOT the owners of the building, but more so the operator of the airbnb unit aka str arbitrage

There are some forms of income that do not require any receipt to use which are some of the above (full time job just offer letter or ownership of newly acquired rental property (lease agreement + security deposit/rent proof only).If you dont plan to go back to full doc then stay in the no income/state world and the premium for these products varies between 1-2.5% higher than full doc fannie/freddie/FHA/VA rates but pros and cons right?

The question is: Do I let her rent longer, continuing to collect, then renovate before the next renters' cycle (around March/April or later)?

You can build in sound proofing, but honestly I'd go with 2-3 floors for each so you don't have the tenant downstairs complaining about the one upstairs walking around at night.For costs-it could be more or less than new retail-depends on finishes of each. 

Ask for proof of funds, more information about the buyer, etc.