There are multiple parking garages nearby, including valet service at the Olive 8 (please note that valet could be busy during the morning commute).  See parking rates for self park and valet at the Olive 8 below.

From I-5 North Bound:

Exit from the left lane at Seneca Street. Right on Sixth Avenue.  Right on Pike Street. Left on Eighth Avenue.  Continue forward through Pine Street.  The entrance to our downtown Seattle WA hotel is the second driveway on the left. 

Use caution when crossing protected bike lane, when entering and exiting hotel.

From I-5 South Bound:

Take the Union Street Exit.  Continue forward onto Union Street.  Turnright on Seventh Avenue.  Right on Pike Street.  Left on Eighth Avenue. 

Continue forward through Pine Street. The Hyatt at Olive 8 entrance is the second driveway on the left. 

Use caution when crossing protected bike lane, when entering and exiting hotel.

From I-90 West Bound:

Merge onto I-5 North via Exit #2c toward Madison Street/Convention Center/Vancouver, BC.  Take Madison Street/Convention Center exit.  Follow exit forward onto Seventh Avenue.  Right on Madison Street.  Left on Eighth Avenue.  Continue forward through Pine Street.  The entrance to our downtown hotel is the second driveway on the left.

Use caution when crossing protected bike lane, when entering and exiting hotel.