It's nerve-racking, but a rush if you can get it done and help the homeowner avoid losing their home at auction.

The difficult part right now is money is expensive to borrow, a lot of buyers are on the sidelines waiting for borrowing to get cheaper. 

Otherwise prepare to cry and wonder if your money is being stolen.  

I also have a 401k that my 9-5 does a 5% match on so I do 5% just to get that basically free money as well.

If you day-trade or read the tea leaves for hot stock tips or play the ponies or simply put your money in index funds, do any of these things occupy your interest like real estate?

If a toilet runs at full pressure, the tenant is going to call you sooner than later from the sheer racket it's making.If you are purely looking for leaks, you will spend significant sums of money to save yourself very little money in the long run. 

Do I need to show that money (25%) in my business account for two months?

In my opinion STR and small hotels are where the money is made in Spain. 

@Corey SchneiderWe fund with a combination of Hard Money and Private Money. 

I find the supplies usually get used and, to me, that's money well spent if my guest is keeping the property clean.