What platforms do you folks recommend for listing a Single Family home in CA for long term rental? 

I'd probably try FB marketplace first and see how it goes, then if that doesn't help look for a good advertising platform like buildium (which is probably too robust of a tool for what you need right now, but something with just that advertising feature).  

Airbnb/VRBO do bring in about 60% of our bookings but that does leave another 40% to direct bookings and a combination of our other platforms (Marriott Homes and Villas, Booking.com, JetBlue and Allegiant Airlines, Google Vacation Rentals, and more). 

There also seems to be a monthly fee for using the platform.

We ran the numbers, analyzed the property multiple times, and based on AirDna, and other platforms, it looks quite promising.

This is basically how mobile home parks usually work where the person owns the mobile home and rents the spot.

We entered into a partnership to purchase a mobile home for $105,000 with an owner finance deal over 3 years.

Striving to put out great content on all platforms.

My apologize if I am on the wrong platform. 

What type of work is typically recommended for an older (mid 90's) single wide mobile home roof that is not leaking but that is very old looking?