We had a great time.
Karina was very helpful especially cause we didn't think of all we would need in advance and she was very ! spontaniously and could arrange everything we needed. We recognized different small signs of hospitality like a new bar of soap, large, thick and fluffy towels, flowers on the table, all that made our stay convenient.
The appartement is spectacularly designed, just exactly like the photos in the description. The 4 of us (parents with 2 grown-up kids) felt very comfortably with the 2 younger easily bedded on the airbed. Maybe that is nothing for 2 older couples, but we enjoyed the stay.
Walking distance to the center, to bars and nice restaurants, even a jazz concert - nothing more to desire.
The surrounding is fine during daylight, later in the night we felt more safe when together, but that was only a feeling - we never had any unpleasant situation. The parking lot in the garage was a perfect match for the rented car, with direct access to the appartement.
Thanks Karina, if we ever come to SF again, we will ask you again.