This apartment is located in a very private area of Nob Hill, which is in close proximity to seemingly everything. The unit was quite clean and had everything we needed for our stay. We did not meet Mija, but she communicated well with us remotely and there were no issues with finding or occupying the unit.
It is an older building, and as such, we were able to hear footsteps from the unit above, however at no point was our stay compromised due to that. We had an opportunity to meet the person who lived there while we were enjoying the outdoor patio, and they couldn't have been nicer. If you need to have a completely soundproof living unit, you may want to consider a different unit configuration, but we would have no hesitation about staying again when we are next in SF.