I've noticed that reviews before 2007 for the Abigail Hotel were very bad. The reviews in 2007, however, were quite good. And I have to agree. This can only suggest, to me at least, that they've made an active effort to improve the cleanliness of their rooms this year. Upon my arrival, the staff was very knowledgeable and polite, and the hotel lobby, halls and my room were all very clean.
Fresh towels are provided daily and the room is cleaned. The hotel staff will be more than happy to book any tours or transportation needs if you request it.
The hotel is also very conveniently situatedit's just a few minutes walk from downtown and the BART station and various MUNI lines are close by.
A cautionary note: The hotel is situated in the Civic Center, close to the Tenderloin, so the neighborhood is not ideal if you're looking for a romantic getaway. You'll find homeless people along the sidewalks, but the neighborhood itself I would say is still fairly safe. If you're a young traveler I think the hotel is a good choice and it'll save you a fair amount of money, but if you're picky about where you stay and don't mind spending the extra cash, San Francisco is filled with other hotel options as well.