Shoumma S.
Google
Great location for the main tourist sites of Córdoba, and there's a bus stop at the start of the street for bus service from the train station. The staff were friendly, and the place seemed clean enough. The layout consists of rooms around a couple of courtyards, so not the greatest when it's raining as it was when I was there. It also means there can be quite a few stairs up and down depending on what room you get.
I did get upgraded to a private room so it's hard for me to rate the hostel part, though I wasn't even notified of it so I can't even say if it was on purpose or accidentally. However, mirroring other reviews, the soundproofing seemed to be non-existent which isn't great especially with the rooms all facing into a courtyard. Other than that, it was comfortable enough.
They have both a hotel and hostel, so be aware that the hostel reception is further up the street.