End to end, I bought the land, secured permits, got the PPA and IA, SUP, and still own the project.

It’s inexpensive to provide but can make a big impact.Comfortable Bedding: Investing in high-quality mattresses, pillows, and linens improves the guest experience and leads to better reviews, which can boost occupancy rates.Smart TV or Streaming Services: Offering Netflix, Hulu, or similar services is a low-cost way to enhance guest entertainment and stay competitive.Fully Stocked Kitchen: A well-equipped kitchen with basic appliances and utensils appeals to families and long-term guests, saving them money on dining out.Dedicated Workspace: If your property caters to remote workers, adding a small desk and ergonomic chair can set your listing apart.Outdoor Spaces: If your property allows, an outdoor seating area, fire pit, or hot tub can significantly increase your nightly rate and attract more bookings.Energy-Efficient Features: Guests appreciate eco-friendly options like LED lighting, smart thermostats, or solar panels, especially in eco-conscious markets.Keyless Entry: A smart lock is a relatively small investment but offers convenience and security, which many guests value.If you’re deciding on amenities to add, it’s always a good idea to research your local market.

It isn't having paid off properties that offers security, there are still taxes, insurance, maintenance and management involved. 

In short, securing an STR permit isn’t easy unless you fulfill all the township’s requirements

I just secured a deal in Solterra which seems to have everything in order regarding rules.

Labor, supply chain (we are on an island) and red tape: from offers and closing, to funding to permits.  

Which one is more appealing - continuing to own the house or the security of that much cash/liquidity?

I guarantee you are more likely to secure favorable terms if the seller likes you and can imagine you as a great operator for the business.

Additionally, the supply of homes for sale is constrained because of this and will be for some time putting upward pressure on prices in most markets.Thinking about renting your house in Seattle would be wise as someone else will pay the mortgage down, and rents and the value of the property will go up over time.

They’re asset-based, meaning the loan is secured by the property itself, and they often have quicker approval times but higher interest rates (think 10–15%) and fees.