We stayed at the Grand Hyatt San Francisco after leaving an unacceptable "landmark" Union Square hotel one night into our trip. The Grand Hyatt desk staff was incredibly accomodating to find a room for the balance of our vacation. We stayed on the 29th floor overlooking the city and the bay. The bellman told us the room was very recently updated. The linens and pillow-top mattress were very nice! Everything was very clean and the view was just incredible. All the staff we met were very friendly and helpful: doorman, front desk, bell services and concierge. The location of this hotel is very convenient to Union Square, China Town, shopping and theaters. As with any of the hotels in this area, you should request an upper level room, at a slight cost premium, if you want a better view and less street noise.

Altough this hotel extrudes a business/formal impression it is extremely luxurious and well managed for a 4* hotel. My partner and I stayed in one of the club level rooms, the rooms themselves were well equipt, clean and very comfy! The bathroom was quite small but served it's purpose non the less. With the addition to the club level room, all day drinks and light meals were served which were a pleasure. Some of the views from the hotel are wonderful but make sure you ask for a 'good view'!
I would defineately recommend this hotel as it is well within everyone's budget.

As a Hyatt Gold Passport Diamond member and having stayed at many Hyatts around the world I was surprised to see this hotel classified as a Grand Hyatt. The room is worse than many Hyatt Regencys elsewhere in the world. Example, the blanket is a thin polyester military style blanket. In this day and age when almost every nice hotel has upgraded to duvets and down comforters (even some Four Points by Sheraton!), I find this truly disappointing.

The room is small, not well cleaned, and in need of an update. Bathroom is small with no separate shower and a very small tub

The service is also quite lacking to be qualified as a Grand Hyatt. It took housekeeping 30 mintes to bring me a laundry bag.

The best part about this hotel is its location, right by Union square, close to shopping and BART. Of course this means with the poorly insulated windows I could hear every car and police sirens even on the 33rd floor.

Try the Park Hyatt if you don't have to walk to Union Square shops. It is a much better hotel.

We booked the Grand Hyatt for our first trip to San Francisco because of the closeness to Union Square and the Regency service. The hotel service was the best I have had and the views from the Regency level and restaurant were out of this world. The staff at the hotel were helpful and courteous. The Regency service was strictly a continental breakfast; however, there was plenty and the coffee was great. I would highly recommend the hotel. It is close to the cable car hub and easy to catch a taxi to the location of choice. The hotel was very clean and the linen quality was wonderful. The views from our 33rd floor room were magnificient and we could see Fisherman's Wharf, Alcatrez, Coit Tower and China Town. You won't go wrong here. There is a very safe atmosphere.