I think it is pretty rare to see a similarly located London hotel < £100 a night. Certainly i have airbnb'd for ~55-60 comfortably - but with way less personal space.
For my city, at least, i dont think it would be cheaper but if the monthly rate thing is true can imagine it being similar order of magnitude?
I reckon costs being of "similar magnitude" is plausible (if the monthly rate discount is truly ~50%). Interesting trade offs imo
This frequently happens in areas with aggressive tenancy laws but "temporary accommodations" are exempted. So then you get the discount that comes from not being subject to a bunch of rules that make it harder for the property owner to get rid of a bad tenant, which can affect the cost significantly, exceeding the value of those rules to a good tenant.
But even when you compare like for like. A one bedroom in the same complex would have total around $2000 a month with rent and utilities.
The extended stay had people going to work in suits, a school bus picking up kids, and crew from at least two films that were being shot in the area were staying there.