Very friendly, comfortable and in the heart of Fishermans Wharf
I booked at the Argonaut as a surprise trip for my husbands birthday. The staff were incredibly helpful, and so friendly. the hotel is right on Fishermans Wharf, and within 2 minutes of the cable car, Ghirardelli Square and some excellent restaurants, with the ferry to Alcatraz and other Piers only a short walk away along the promenade.
Breakfast at the hotel restaurant is good, with prices being average - if you get bed & breakfast, the pastries are huge, and together with fruit will give you a good start even if you don't choose to add anything else - I'd recommend the Huevos Rancheros if you do though, really quite excellent!
Our room was a standard, and was plenty big enough for 2 of us, with 2 double beds. Beds are firm, with good, hotel quality bedding.
The hotel has it's own gym, which although not huge, is well equipped and was empty throughout our stay.
The lobby to the hotel is very large, and used as a gathering area for guests - lots of comfy chairs and an open fire - you'll have to be quick to get a seat next to the fire in colder weather! Each afternoon at 4pm there's complimentary hot chocolate, and at 7pm wine tasting - again complimentary, and both really good.
I would happily recommend the Argonaut to anyone wanting a pleasant base to explore San Francisco, and hope to return myself!