Looks lovely but -
Not mobility friendly so if your health declines and you have to use a walker, getting into the home or to the bedrooms or bathrooms will be a challenge. The steps to the front deck could easily be changed to a long ramp though. The deck drop off might be safer if there was a railing around it.
That dishwasher is at an odd angle. It will be difficult to keep the door open and load it from the sink.
I am assuming both bathrooms have a single sink only. That may work for you but not great for resale. 2 bedrooms vice 3 does not have as good resale either. It appears that one of the bathrooms is also accessed via the laundry room and is very small.
Not sure but it appears that the upstairs is one bedroom and the loft that could be turned into a bedroom and the other current bedroom is at the foot of the stairs and has part of the room with a very sloped ceiling.
If the 14x14 outbuilding could be plumbed with a very small bathroom and kitchen area, it might serve as a guest cottage/AirBnB studio.
There's a road between you and the ocean and not sure if you have any beach view or beach access.
You have to consider not only California taxes but also access to adequate medical care.
Since there is a woodburning stove in the living room, you may want to look at the heating costs for the area or how reliable they are. Is this in an area that will now experience a power shutoff whenever there are high winds? And what is the wildfire danger there plus escape routes? If there is a possibility of a wildfire, you have a LOT of mitigation that needs to be done. I imagine that will affect your insurance rates until completed.
It's also been for sale for over 9 months. So either the current owners are unrealistic about the price, or there is a lot that needs to be investigated further. Also, if it has been on the market for 9 months, what does that say about resale potential?
Also, there are two parcels available not too far away. Closer to Trinidad and father from the ocean but you could build a completely ADA home there that will be great if there are any health/mobility changes .
https://www.zillow.com/homedetails/0000-Frontage-Rd-Trinidad-CA-95570/2084352796_zpid