On top of all that has been said previously, I would add that it is a very quiet place. Holly and David are very nice and accomodating. Staying with our 19-month old boy was not a problem, only a few items had to be moved out of reach - enquire if you have special needs for young kids. The backyard is lovely. There is a lively child playground in Duboce park just a minute away and you can visit the small Randall museum on rainy days. All nearby restaurants we tried welcomed children - very good & trendy restaurants are just minutes away. It is also possible to walk to the warfs through Nob Hill, Chinatown and Downtown, even with a stroller.

As for parking, you can stay for 2 hours in the surrounding streets during the week (but apparently 1/2 day is safe), and unlimited time during the weekends. Although we didn't need it, there is a public parking corner Noe and Market that you may try. Take the public transport (e.g. streetcar F on Market St) and you will easily reach the touristy areas. The neighbourghood is very safe, vibrant and has awesome architecture. We loved it!

We can't think of a better place to stay in San Francisco.