United States
Great for getting from San Francisco to your hotel if you're centrally located. The BART is San Francisco’s underground system and covers (as it says in name) most of the bay area.
Depending on your arrival time it’s really easy to get the BART to the centre of the city. This will save forking out $40 on a cab.
Once you arrive at the airport and have picked up your bags follow the BART signs. Trains run every 15 minutes and you can buy single tickets from the machine for $4.95. All you need to do then is get off at Powell Station for Union Square. Believe me, I'm a cab fiend but this was easy and makes you feel less touristy.
The hotel can get you cabs when you depart to the airport and it takes around 30 - 45 minutes to get there.
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