Great central location
We stayed at the Chancellor for three nights and had a twin room. The first room we had was not quite up to scratch (strange smell and not enitrely clean bathroom) so we asked to be moved which was done promptly and curteously by the reception staff. Our second room was great, cozy and clean but with little view as it faced over the back of the hotel-it was however quiet.
As others have said the bathroom is quite small but not really an issue for a city break hotel thats really no more than a place to sleep. I think the price reflects the location, right in the centre of Union Square next to loads of shops and restaurants, quite busy but more importantly felt safe. Breakfast in Lucques restaurant downstairs was awesome, probably the bext breakfast I have ever had plus the service was great. Reception offer coffee, water and cookies 24/7. The bar has a happy hour and the cocktails are good. If I return to San Fran I would definitely stay here again.