The coordinates given to the Swedes for Diego (34.097842, -118.316307), are the GPS coordinates for 5808 Sunset Blvd., Los Angeles, California. The building at this address is owned by Netflix.
The Hargreeves siblings were all born on 1 October 1989. However, due to time travel, they're all different ages by the time they reunite. Five is about 58, Klaus is 34 (having fought in Vietnam for ten months a few days before appearing in 1960), Allison is 32, Luther is 31, and Diego and Vanya are 30, with Diego being about a month older.
Lila is wearing Doc Martens shoes, which were big in the 1960s but also in the 1990s, when Lila was raised.