Where is the exact Sixt counter and key drop box located at the SeaTac Rental Car Facility?

When arriving at the SeaTac Rental Car Facility, proceed to Level 5 for all vehicle pickups and customer service inquiries. The Sixt customer service desk is strategically positioned on the far-right side of Level 5 as you enter the main rental car hall from the airport shuttle drop-off zone. After completing your paperwork at the counter, you will be directed to the garage to retrieve your vehicle. For returning your vehicle, navigate to the designated Sixt returns parking area located on Level 3 of the facility. Upon arriving at Level 3, park your vehicle in one of the designated Sixt return stalls. If you are returning your vehicle outside of standard operating hours, Sixt provides a convenient 24-hour after-hours key drop box situated directly at the Level 3 returns area. Simply ensure you remove all personal belongings, lock the vehicle, and deposit the keys into the secure drop box. The shuttle bus back to the Seattle-Tacoma International Airport terminal departs every 3 to 5 minutes from the first floor of the facility, ensuring a swift transition for departing travelers regardless of the time of day.