The Bartlett is an old style hotel on O'Farrell Street with new updates. It offers rooms with both private and shared bathrooms. I've always referred to these as sailor's hotels, not sure why, probably just something I made up.
Anyway, The Bartlett was clean and pretty quiet for its location and construction. This means that you should expect some noise from the street, surrounding buildings, and other guests; but that is what you should expect at a place like this and I found it to be quieter than I expected. The rooms are spartan but updated, and everything is reasonably well equipped.
You shouldn't expect a resort experience, but the price makes this a great value, especially as a single/couple tourist or for a business traveler (like me) who will be out and about for most of the day and evening.
Also, breakfast at the Bartlett Hall will become your new best friend, it is also a great value and exceeds expectations.