BEWARE IF YOU BRING A CAR
Our experience at Hotel Drisco was a mixed bag. It is a very lovely historic hotel and the service is second to none. Every single employee treated us with the utmost courtesy and respect.
The room was nice with everything we needed, though it was VERY SMALL. We booked a standard king room and asked for one on the top floor but the room we got was much smaller than the photo on their web site portrays. BUT, it had a great view which I was very pleased with, being my first time in San Fran.
We enjoyed the wine reception the evening we arrived and it was very welcoming with various wines and appetizers. It was wonderful. The morning breakfast service was a nice variety of various breads, croissants, pastries, cheeses, cold meats and hot oatmeal. It was just right for us. And the coffee was some of the best I have ever had!! 
After checking out, we walked outside with our luggage only to discover that our rental car had been towed!! Evidently my husband unknowingly parked in front of a private driveway the night before. All the parking spots on the side street were taken and he had to find a spot in the front at night and in the rain. He did not see a garage door or driveway and it was definitely not marked as "no parking". The hotel manager called & found out it had been towed that morning, just hours before. She called us a taxi to take us to retrieve the car. It cost a whopping $500 and we were also ticketed!! That fiasco way more than DOUBLED the cost of our stay at this hotel. Fortunately we did not miss our flight. 
Now we do take responsibility for our mistake and acknowledge that the front desk clerk did offer assistance with parking the night of the offense, though the car was already parked by that time. However, we feel the hotel could do a WHOLE LOT MORE to make sure this doesn't happen to their guests. They brag on their web site about free street parking and how hotels downtown can cost more than $60/night for parking. But they do not show you where can & CANNOT park or tell you the car has to be moved every 4 hours on weekdays or you'll be ticketed. I only found this out beforehand from other trip adviser reviewers so I asked the doorman if he would move our car us one day, which he did. 
Also, I feel that since the hotel knows how strict they are about parking (not to mention one of the highest towing costs in the US!), they could provide some kind of hotel sticker or something to put in your car which would alert the police that you are a guest at the hotel and hopefully contact the hotel with any problems to avoid guests getting towed.
Because of this, I deducted a whole review point. It was a big, costly negative for us. Otherwise, I would have rated this hotel a four.