I'm sure I didn't think of everything, but I covered a good amount of ground.Some examples of the provisions (many of these have more detailed descriptions in the lease, this is just for illustration purposes):Windows must be kept shut when it's raining or snowing.All pipes must be dripped during freezing weather (tenant is liable for any burst or leaky pipes that are a result of not dripping the taps)Wood floors / granite countertops / and butcher block counters can only be cleaned with certain products that I list (and I list forbidden cleaning products that can lead to damage, such as vinegar for floors or granite).The dishwasher can only have dishwasher detergent (ie Cascade), and DO NOT USE dish soap.There will be a cleaning fee of $x if the premises is left unclean upon vacancy.Any property left on the premisesA list of things that are forbidden from being put down sinks and pipes, and a provision that if a plumber is called and the repair is due to anything other than defective plumbing, the tenant is responsible for the cost of repair. 

Snowbirds who are presently living in warmer weather.4.

I live on Oahu the weather is beautiful right now!

The sweet spot is in having correct reserves to weather what-ever storms, in or around that 60% LTV mark, that's operational "bliss". 

@John LaVecchia, there is another tool other than Airdna, it’s called mashvisor .. both these tools are AI based algorithms and they predict and forecast , there is a rentalizer tool in airdna and it allows you to put in a address and it predicts numbers based on what adjacent properties ( or itself ) is earning in revenue

Bay area is beautiful and has great weather,so some will always be attracted, but as we are seeing in Manhattan for example, people are willing to consider alternatives.

I am new at this but am used to model bases economic forecasting. 

I think the critical piece is having a good team (cleaners, handyman, plumber, etc) in place with people you trust and having processes in place (process for turnover, process for safety checks, process for updating rental calendars, process for updating rental calendar based on future holidays and other important events happening, etc.To answer your question about the biggest risk, I think the biggest risk is the weather. 

At my own initiative, I bought an AC unit for their side of the property in June (15 minutes to order it + installation) and at their response to one of my inquiries, they suggested a weather strip on their kitchen door to keep the snow out.

All weather dependent of course.This is defiantly the more expensive and time consuming route to go in terms of STR.