https://www.youtube.com/watch?v=CjpYahFv1_M
Perhaps the Flatiron could have been used as the NY Continental Hotel location, but it wasn't.
https://www.reddit.com/r/JohnWick/comments/16he5s2/this_is_not the_hotel_where_john_wick_stayed/
https://en.wikipedia.org/wiki/The_Continental:_From_the_World_of_John_Wick
https://johnwick.fandom.com/wiki/Continental_Hotel?file=17.jpg
https://johnwick.fandom.com/wiki/Continental_Hotel , https://www.google.com/maps/place/The+Continental+New+York
https://screenrant.com/john-wick-continental-hotel-new-york-rome-morocco-osaka/
https://melodydexter.com/more/blog/radisson-blu-sydney-the-john-wick-hotel This building is in the last scene of the first Matrix movie. However, back in 1999 no one would have spotted its slight similarity with the shape of the NY Continental Hotel, because the John Wick character wasn't invented yet.
https://en.wikipedia.org/wiki/Wales_House,_Sydney , https://www.google.com/maps/place/Paradox+Sydney
https://theglenncogar.wordpress.com/2016/03/13/neos-phone-booth-has-changed , https://www.google.com/maps/place/The+matrix+filming+location
https://matrix.fandom.com/wiki/Telephone_booth , https://www.flickr.com/photos/adactio/262962691