Avete people, Archaeology student here who's in the process of rebuilding ancient Rome in a Minecraft world. I do a lot of research while working on the map since I am really interested in Romen history. It's here where I've run into a bit of an issue. I've come across a building, that is featured on many reconstructions of Rome, but I cannot find out which building this is supposed to be. This question may be a bit of a long shot, but I've got no idea where to ask otherwise.

The building in question can be found here. It's located on the southside slope of the palatine hill, near (or next to) the Scalae Caci, between the temple of Magna Mater and the Circus Maximus. It's present in pretty much every single reconstruction of the Palatine I've come across but I can't seem to find what building it's supposed to be. It looks a bit too symmetric to be just a set of insulas in my opinion, and why would every reconstruction have the exact same building on the exact same spot if it's just supposed to be random houses?

The theory I've currently got is that, if it's an actual building and not just some houses, it's the Horrea Germaniciana (since it's mentioned that they were located close to the Horrea Agrippiana and between it and the Tiber). So is this a specific building, or just random houses built in an odd shape? Any help regarding the identity of this building, or even a slight nudge in the right direction, is much appreciated! Thanks in advance!