A district name is a starting point
The city's Creekside information places the park beside the plaza and connects it with the Big Walnut Trail. It is a useful shared reference, but it does not tell someone which building, door or parking level you mean.
For a home or business, give the street address and the entrance involved. Include a unit or suite if there is one. A recognizable place name can follow those details rather than replace them.
If the keys are in the car
Give the garage or lot name, the level if applicable and the entrance you used. Add a row marking or another nearby sign if you can see one safely.
If you have walked to a shop or restaurant while waiting, make clear that the car is somewhere else. The automotive page helps separate a lockout from a lost-key request.
If it is a business entrance
Say whether the problem is at the public entrance, a staff door or a private unit. Have the person responsible for the premises available to authorize work where needed.
If the door belongs to a shared building system, contact management before making changes. Describe the particular lock and symptom rather than assuming permission to alter the whole property's access.
Use the signs that are there today
The city has published information about changes planned for Creekside. Follow current signs and describe the entrance actually available when you call.
Ask about availability for the address and the proposed scope before arranging work. A few accurate details are more useful than a long directions document.