The reason I thought about putting the other house (not the residence) in an LLC, at least any expense can be considered business expense. appreciate your input. 

And it’s not just about private business.

Sorry, but these are the costs of doing business.

The previous landlord had one for the property, obviously for his own business.  

According to passive activity loss rules, every business is obligated to adhere to specific criteria, especially when it comes to short-term rentals.

As mentioned above, some markets are visited by large groups on vacation while others are more "utilitarian" (business travel, insurance stays, special events, etc.).Competitive analysis will tell you what the market is currently bearing.

According to passive activity loss rules, every business is obligated to adhere to specific criteria, especially when it comes to short-term rentals.

They can be very busy these days...)

1st you need your Seattle business license, then you need to get your RRIO, (the inspections are random and you'll be notified when youre required to do an inspection), after you get your Rental Registration application done, then you can apply for your STR license.

@Francesca Zanzucchi Most of the delay is caused by the banking-controlled ACH system. 48 hours is the common "promised" turn time, but our reality is 3-5 business days.You should look into the 10 day delays, as most payment software is automated.