From years of experience, not in REI, but in online forums, skype chat rooms etc. 

Just wondering if there's a quick and reliable online vendor, or should I just take my RE broker's advice (I trust her) and use her "guy" (she's never done home equity through him, to me it just sounds like another person who needs to take a cut)? 

Don't worry about these costs per se, it's the entire Op Ex model of STR's that is the silent killer, you have to pay for EVERYTHING including these platforms but also furniture, electricity, gas, pool, landscaping, etc. 

Treat this as a normal business transaction, do not even consider this as being family.As for the interest/principal calculation's there are numerious calculators on line.

So you should always check with the sponsor or platform to find out for sure.For example, on Arixa Capital (a debt fund I'm invested in), it's reported as interest income.

Buy a rekey kit from Change-a-Lock or Primeline, available online or at home centers.

What are the preferred methods of online lein searching?

The good news is it’s simple math and online deal analysis and calculations make the math much easier and with a greater degree of accuracy

@Jesse C Vaughan you have come to the right platform for advice.  

I read online that a rent increase of 10% or more requires a 60-day written notice.