Good value, not fancy but efficient
Excellent location if you don't want to stay too near Union Square which can be busy and quite noisy. The Embarcadero area, where the hotel is, is close enough to walk to Union Square but is quieter at night than the centre of the city, particularly at weekends. Club Quarters is cheaper than other nearby hotels in the Financial District but of course doesn't have all the same amenities. That said, it is perfectly acceptable. Rooms are clean and check in staff are efficient and helpful. Nice lounge and free use of two computers which are available more often than not.
We booked a one room suite with kitchenette because we had a lot of luggage prior to joining a cruise. The room was spacious and we had lots of space for our stuff. Furniture is fairly basic but functional. The "Kitchenette" was merely a sink area with a cupboard over and a fridge and microwave but it sufficed for buying in stuff for breakfast. Everything was in working order - I've stayed in fancier hotels where the fridges don't work as well. 
The room however was a little stuffy and there were no options to open windows. The air con was old fashioned and very noisy and kept us awake at night. 
All in all, good value for one or two nights but could do with a bit of modernisation.