Even if one lender gives me financing with SWD, would this make the property less desirable when selling in the future? 

In the end, you still for a CA property that is likely very desirable and holds values very well with high appreciation potential.

If you can do Cash or a cash partner that would be best to get through the process without putting yourself into a less desirable outcome on ROI.

That's how people get over-leveraged and into trouble.If you want to invest, do it the old-fashioned way: increase earnings, reduce expenses, save, then invest.

I have a strong conviction this area will turn around in 5,10, maybe 15 years and soon become highly desirable.

One thing everyone reading along should consider is how long it would take to repay your investment in a $10k, 20k or even 30K class by earning 5% on your money.

I wish it let me stroll through each day going back as far as I desire, but it does not.   

It can help maintain or increase property value, appeal to a wider range of guests, and contribute to overall guest satisfaction and loyalty.Overall, hiring a professional designer for your short-term rental can elevate the guest experience, improve occupancy rates and profitability, and position your property as a desirable option in the competitive vacation rental market.

There are plenty out there that would love to earn your business.

I therefore had a big desire to keep them both as furnished rentals (so we could continue to use the units when desired).