Wonderful on all levels: the apartment is great to stay in (super comfy bed, amazing bathtub/shower, nespresso machine with 4 types of milk and not-milk, toothpaste if you forgot yours, and a million other details I couldn't remember to list them all), the neighborhood is easy to walk around with tons of food options, and Virginia & Marshall are super nice about making sure you have what you need for an easy happy stay.
Seriously, I think this may have been the best airbnb experience I've ever had. They know what they're doing, and I just had a really pleasant stay in SF at their place.