Can I walk into offices and leave a flyer for everyone in the office to read and set up zoom meetings with those people to go over the details further? 

How does acquiring compare to renting a small office or sharing office space with another business in that market?

Clear office, Sheriff’s office, and law firm associated literally didn’t provide any information. 

@Nathan Deutsch Welcome TO BiggerPockets If you are not comfy with privacy issues while house hackingyou can try  a  FHA loan or start with a partnership to buy a STR etc

Through your LLC in the US, you can set up a virtual office in Spain.

Another idea for housing economy if you have an office is to rig your office to live in but not sleep in. 

It is a brick and mortar office. 

I would guess many government workers are renters like law enforcement and state department as they rotate in and out of the field offices to DC.

This active income can help me fund my retirement as well as help me get reimbursement for home office and health care premium while lower my tax liability.

You could also focus on attracting weekday guests—maybe offer discounts for longer stays or highlight features like fast Wi-Fi or a comfy workspace to appeal to remote workers.Since a hot tub isn’t an option, maybe think about other ways to stand out.