On most any day you could find people walking dogs, or children playing in the area.

High property prices mean fewer people can afford to buy, so more people rent.

Theming can be $5-10,000 per bedroom (includes whole house decor, so a 5 bedroom could be $50,000 for the entire home furniture) depending on your imagination and quality.

Again I am not an expert on CA ski area but I imagine hot tubs are popular amenities. 

If it's just slapped in the backyard, i'd imagine it may not make a big difference but if you create an environment around it, it could be different.   

I'm sure people would pay extra for some kind of "meal prep/private chef" type package in their living situation.You've got the right idea thought, but don't be afraid to reach...nothing wrong with dropping your price after a couple weeks if you don't get any interest.  

There are also horror stories about people loosing their property in Spain. 

Anyone that is looking at your assets is always going to need to factor in property management, so you can show that as a real expense (and really make it as high or low as you want).I work in a vertically integrated real estate and development company, and I cannot imagine how things would run if we did not have an internal property management company that essentially works for the other companies but also stands on its own.

Imagine interest rates drop 2% or more in 2 years.

Wow can you imagine being a LP with this dude :)  we will have to ask Mr.