I've written a breakdown for the lovely guys at 80.lv and thought I'd share it here as well :)
Thanks again Kirill!
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Unreal Marketplace:
https://www.unrealengine.com/marketplace/bistro-restaurant-scene-asset-pack-realtime-archviz
Gumroad:
https://gumroad.com/dominiquebuttiens
Cubebrush:
https://cubebrush.co/dominique_
Trailer:
https://www.youtube.com/watch?v=wro8ZhGSqZk
Original Artstation:
https://www.artstation.com/artwork/WDJ5Q
Original article:
https://80.lv/articles/getting-interior-details-right-with-ue4/