In the caption, they explain: “We thought about making an offer on this [house] until we saw the stairs and we said hell no.”
It looks more like a painting by Escher than something which should actually be in a house. Good luck trying to negotiate that at the best of times, let alone when you’ve had a few drinks or are carrying something.
As you can imagine, many viewers are horrified by what they have seen as it would appear to be a major tripping hazard and a death trap waiting to happen. Many feared they would end up in hospital if they lived there and another wrote: “I know what I’d be ripping out first thing. It’s dangerous and just the extra mental step for me, at the top, going, ‘Uh, ah, LEFT! Left leg first.”
However, it would appear that they are more common than you might imagine and The Mirror reports that they are often used in homes with limited space.
In a second video, the couple imagines what would happen if you tripped down the stairs - spoiler: it would be quite painful.