Google Maps lets its users to save a spot as a parking location. For this, you just have to tap on the blue dot (which shows your current location) and then tap ‘Save Your Parking’ (for Android) and ‘Set As Parking Location’ (for iOS). You can also add additional details about your parking spot such as the level (if in a multi-level parking structure). Further, you can also share your parking location with friends!
Android: http://bit.ly/2BIX0RI iOS: https://apple.co/2BITBlx