Perfect for short stay in San Fran
In terms of location, the Chancellor hotel couldn't get any better - (a) just a few minutes walk from the Powell St. BART station (which goes to / from the airport), (b) on union square so very near Westfield Shopping centre and also a nice enough area and (c) on the Fisherman's Wharfcable car route. It's also near a lot of the car rental companies.
Yes, the rooms are small and when you have two very large backpacks that you have flown across the Atlantic you don't have much space to put your stuff, but you are staying in an "old" building with fire escape etc, so in fairness, if you want to stay somewhere modern then you could just do that instead and get a larger room but not on union square. Personally I think that across the states you get to stay in plenty of modern large hotels, so having a hotel with more old-school character makes a nice change.
No tea/coffee making facilities in the room, but there is tea/coffee/water downstairs. The reception staff were very efficient and helpful. There are some nice touches like the bath duck and sweets in the room. I loved the idea of the pillow menu, but I did have to ask 3 times to get my pillow delivered - the first time I asked I was told they were far too busy to deal with me which was a bit rude. I wasn't asking for all the staff to drop everything and rush me a pillow (stat!), I was asking nicely and being given out to wasn't necessary. So I just asked for it to be brought up when the staff weren't busy, but it didn't arrive. I asked again later and it didn't arrive. I asked the next day and got it.
Personally I liked the sound of the ding-ding-ding of the cable car going past, but again if you don't like noise, go somewhere more modern. 
The cafe next door (Sears) does good breakfasts and happy hour snacks!
Stay here, it's good.