This is a photograph printed on heavy matte paper, not a poster. The stock is 189 gsm, which is heavier than the paper most posters are printed on, and it has a flat matte surface that absorbs light instead of throwing it back at you. There is no glare, so the print reads the same from across a room as it does up close.
The image is printed with Epson UltraChrome GS3 pigment ink. Pigment ink is more lightfast than dye based ink, which is why it holds detail and depth in the darker parts of a photograph. The ink is GREENGUARD Gold certified for indoor air quality, so a framed print in a living room is not adding anything to the air.
Colour is bright and clean, and fine detail survives. The paper is sourced from Japan, and Epson quotes up to three years of weather durability for this ink outdoors without lamination. That is an outdoor figure from the ink manufacturer, not a promise about a hallway, but it tells you what kind of ink this is.
The print arrives unframed. That is deliberate: it costs less to ship, and it means you choose a frame that suits the room rather than one chosen for you.