But i guess in today's world where things are on line and investors are used to Internet communications this is much easier than those days.

Review their online financials/annual statements.

I just looked online and saw that in Seattle for months to month lease the landlord is only required to give 20 day notice.

But they asked for a little space to store their Christmas items. 

Based off the information you provided, it sounds like there's no issue from your end.In the future, you may want to include something in the lease agreement that outlines objects that may be stored on premise.

In my experience, most of the online calculators are just taking an educated guess for you.

Criteria:6 months STR2 bd, 2 ba, Single Level House Furnished with yard, washer & dryer with A/C (inland not near coast)Pet Allowable 40 lb labodor 10 yrs, 40 lbs Red Heeler Mix and 6 lbs catNear VA Hospital, shops, grocery stores (at least 25 minutes commute)

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

It seems you are falling for the alarmist rhetoric you’ve been reading and watching online.

I just bought all the drywall, cement board, and a 3/4 full thing of red guard water proofing that I need for my entire bathroom remodel for no joke $110, that would have cost me $400+ at the store but someone else who already finished their bathroom just had a ton left over.