Puyallup, WA Apartments Sierra Sun in Puyallup, Washington offers a variety of floor plans. With apartments designed with your needs in mind, we offer you a variety of options to suit your lifestyle. Many amenities like our Club House and Fitness Center are thoughtfully offered for your benefit. Sierra Sun is truly a one-of-a-kind community. Did we exceed your expectations? Please let us know if a Mission Rock team member brought this value to life by emailing more details regarding your superior customer service experience to [email protected]!