This hotel has a really nice welcoming feel to it which starts the minute you walk into the nice lobby. With it being a smaller brand than others I've stopped in all the staff seem to make it feel like a family run business which is very endearing. The check in was swift and informative with a help yourself table containing fresh fruit and drinks which was a nice touch. Lex the concierge was very helpful and highlighted a few things on a map for us. He also rang through to a ticketing office for us so that our Alcatraz tickets were confirmed.
Nice good sized room, very clean and a ample warm feeling bathroom. In fact my wife said its the best bath she's ever had! For me it wasn't very long so really tall people might not be able to stretch out like my wife did. Saying that the shower is quite nice although it is not seperate to the bath.
The best advice I can tell you about this hotel is to sign up to their select guest scheme via the website. It's free and takes 10mins of your time. The result, free wifi plus free drinks delivered to your room every morning. Well worth doing!
The downside to this hotel is the noise from the street. With it being a city hotel I expect this somewhat but other hotels I have stopped in have provided me with higher rooms. This time I was on the fith floor so was quite close to the action.
I found the location to have pros and cons. It's only a 15min walk to Union square for all your shopping but its more like 45mins to fishermans wharf which, lets face it, is the main area to visit. We bought a muni travel pass for the busses and trolleys but never actually seemed to be in the right place at the right time so never used them. If you don't actually scratch off the start date you can get your money back which is useful. You can buy them from the front desk and as far as I'm concerned might as well just in case you do ever need them on your travels. I think they were $22 for a 3day pass.
Hotel aside - if you want to visit Alcatraz prebook or else you will be disappointed! It's such a good experience and was easily my most fond memory. Bus tours - these are really worthwhile even if its to simply get from one place to another. You can hop on and off at any stop and they come regularly. One I used came with the Alcatraz tickets I'd already booked at home so i didn't have much of a choice with the selection. With hindsight I would have gone with a different company. It was called City Sightseeing San Francisco. They all have similar names which is confusing as we tried to get on another company's bus. Although there was nothing wrong with the tour guides it was the regularity of the busses that irritated me. We were once waiting at one of the stops and there were SIX busses from one competitor go by before ours turned up. I got the impression it was a smaller company with less busses as I got on one on different days and got the same guide. The competitor busses also looked a lot newer and nicer.
I hope my experiences in San Francisco help make your holiday as good as ours and I'm sure if you are stopping in the Omni you will be in safe hands.