We loved staying at Doris and Glenn's home in San Jose. Communication was easy and they were very responsive in our messaging.
The location was convenient to the mall, Santana Row, and plenty of restaurants that we really enjoyed frequenting. Amenities were modern and clean, and a great kitchen to use for some home cooking. Internet speeds were pretty good - better on a laptop or device than the actual smart TV streaming service, but nothing we couldn't work through. Bed was comfortable as well so it made for a good night's sleep. Parking can be challenging as it is a tight squeeze but certainly manageable.
As for the area, if you've lived in large cities like SF, LA, Chicago, etc. it won't bother you much at all. We felt very safe in the area but if you aren't comfortable in urban environments where you can see and feel the divide of gentrification, it can be a bit of an adjustment. All that said, walking outside was very safe but also best to try and be alert of your surroundings and walk with someone else (and that's everywhere you go).