Great Location And Good Value for Exploring San Francisco
We stayed at the Halcyon Hotel for three nights on our trip to San Francisco. The hotel is extremely central and the staff was very helpful and friendly. We were 3 adults sharing a room and so found it very cramped. We opted for a ground floor room,it was at the back and it overlooked the alley and the ventilation was not too good. Fortunately we were out the whole day and so it did not matter too much. 
It is a decent hotel if you are on a budget and do not expect too much