If you want to stay here take the good with the bad
The good: Immaculately clean rooms, Comfortable beds, wifi, great staff, Chinatown is right around the corner with some of the best Chinese restaurants in the USA. Across the street is the New Sun Hong Kong Restaurant with some wonderful dishes. Inquire at the desk where to get an American breakfast as a place is very close by but hard to find without directions. Reasonably easy walk to Fishermans' Wharf and you are in North Beach and the tenderloin. Rates are very good for the location. 
The bad: Because of the location it's noisy. I've stayed here numerous times over the course of many years. Sometimes I forget and take a room facing Broadway. When the bars close there is a constant flow of revelers howling at the moon at the top of their lungs and the noise is almost unbearable. Daytime and evening brings the sound of traffic and normal conversation which I can easily bear. Try to get a room facing away from the street. But that's not always a guarantee of quiet. The time before last a couple of vehicles with the same drunks that walk down the street late at night brought in pizza and parked in the back lot that doesn't belong to the hotel and had a party. They kept us and other guests awake for quite a while. This is not the norm, tho. 
I've always like this hotel and will probably stay there again as habit is sometimes hard to break. The staff has no control over the noise outside of their property so they're not at fault. Maybe follow Steve A's advice and bring earplugs.