Best bet is to try local and credit unions, possibly may have some programs for better rates.

House hacking could possibly at least cut that painful expense so not saying you shouldn't do but really watch your numbers.

However, most property management companies utilize every available platform to maximize exposure and lease properties as quickly as possible.

If you are looking to buy in PA, its possible you can qualify for PHA KFIT program that gives you a 5% closing cost forgivable loan.

Your question about hydrostatic pressure is getting into the weeds for sure...I would ask myself, does the potential water infiltration have the possibility to damage the unit and tenant property?  

I had to get really creative because I wanted to use as little cash out of my pocket as possible.

I would love to know whether it is possible to apply the BRRRRR method there or other creative financing over there as a foreigners.

Where did you read that was possible?

(My full strat is to own as few STRs as possible to fund my lifestyle for simplicity.)I feel like a seller financing would be unfair, as the seller wouldn't reap the benefits of holding the note for more than a few months. 

thankyouseparate question on Tariffs possibly causing trade war and inflation and higher 10yr yield and cap rates?