Title and description just say “Block of flats” and “Multi-storey building”; no hint at what is notable about it. There are plenty of useful points within walking distance that could have been mapped instead.
I’m not very fond of this POI, but technically it’s correct: there is indeed a drab 5-storey apartment block there. So is it worth a minimal-stake challenge? I remember one of the very first New York POIs was “a flower” and I’m sure it was technically correct as well. It got challenged and removed though.