Cold calling real estate agents was pretty frustrating as many flat out said they don't do business with investors, so I'm looking for an agent that is okay with multiple offers on a bunch of properties, with the understanding I'll do as much due diligence on my end before putting in offers.

I've grabbed a screen shot of the BP rental calculator, and using whatever information I could find on the listing, and through the broker, this feels good.  

Can anyone recommend a tenant screening service that does a good job with a national criminal background check?

Pay them a flat fee for every offer they write for you.

my screen is all messed up.

For example: in Palma de Mallorca, this summer is going to be banned.In Bcn, on the city center is restricted to the flats that have license from the council.

Thanks for the comment about putting them both on the lease, I'll go that route if they pass the rest of the screening.

As long as you use your clear and strict screening criteria to eliminate applicants in the end you will have only one that is the best.

So I'm working on repairing/fixing-up a 2-flat that I have now and rather than do one small project at a time, I'm flirting with the idea of taking out an unsecured loan from something like lendingtree or Marcus by Goldman Sachs, but I want to make sure that I can refinance at the end of it to get out of that loan once it's over.

I just finished screening, and doing a background check on potential renters. which I went thru trans-unions (smart-move) website.