Have you considered a furnished corporate (mid-term) rental for increased cash flow?

I saw there was a new House Bill that came through last year (2023), and added a new subsection to RCW 59.18.280 which does mention RCW 59.18.260 about the checklist requirement for the security deposit:(4) The requirements with respect to checklists and documentation that are set forth in RCW59.18.260 and this section do not apply to situations in which part or all of a security deposit is withheld by the landlord for reasons unrelated to damages to the premises, fixtures, equipment, appliances, and furnishings, such as for rent or other charges owing.This is the new "exception" (per the title of the RCW59.18.280).

@Kimberly Arington don't understand your post.Why would a LTR landlord entertain an STR offer and have to furnish the property?

Now, they owe me a lot more than the security deposit (rent, bills, damages...)I saw there was a new House BIll that came through last year (2023), and added a new subsection to RCW 59.18.280 which does mention RCW 59.18.260 about the checklist requirement for the security deposit:(4) The requirements with respect to checklists and documentation that are set forth in RCW59.18.260 and this section do not apply to situations in which part or all of a security deposit is withheld by the landlord for reasons unrelated to damages to the premises, fixtures, equipment, appliances, and furnishings, such as for rent or other charges owing.This is the new "exception" (per the title of the RCW59.18.280).

We decided to furnish and try MTR and WOW the demand was incredible, we cash flow well over $1500/mo!

First I'd look at the demand on Furnished Finder.

I signed a lease for 4 months (furnished) and they just moved it.

I then bought a SFH with that money and rehabbed and furnished it and my first tenants were fairly good friends who ended up trashing it and instead of cleaning up and having a second go at it I quit.

You would need to furnish  the house, pay for internet/WiFi and utilities.  

You’d want to check with Furnished Finders to see what you could get for the property on a “medium-term” basis rather than short-term.