I have tuned for everything from the highest professional musician to the beginning student with no complaints. I have a 5 star rating on Thumbtack and I'm A+ rated at the Better Business Bureau.
Good communication, gave price in advance, explained exactly what he would be doing and did the job well
Recently Jon tuned my two pianos. After the wonderful job he performed on these I also had him do extensive repair and reconditioning on the baby grand to the point where it is far more playable and most importantly, enjoyable to use. In addition to a friendly personality Jon communicated with me honestly about expectations and results. Not only was having Jon in my home a pleasure when a small issue arose with one of the repairs he came back right away to fix it. Want someone honest, that does a good job and stands by their work? Then Jon is who you are looking for.
It's best to call me at (650) 759-1369 to check pitch.
50+ years in the business. I attend yearly Piano Technician's Guild conventions, when possible, to keep up on new trends.