From the Westin, you can walk to Primantis. Church brewworks is the same direction but wouldn't recommend the walk in the winter (maybe a mile and a half?), but a taxi will be $5. Heck, from there, a taxi will be $5 to fat heads, Penn brewery, sharp edge is a bit past church, and east end brewery is another mile out from sharp edge, etc. If you take a taxi (which should be easy to get from hotel location), try to make a deal with the driver to come back for you at a certain time (tip well). Taxis are a bit rare. Its not a big taxi town.
ALSO, check with the hotel to see if they have a courtesy shuttle! Many do. You schedule it at front desk, saying I want to go here at X time and get picked up at Y. You just have to get on the schedule.