I arrived 5 minutes after the staffed check-in time of 5pm, but I don't think it'd matter, I didn't see anyone at their reception my entire stay. If you're unlucky enough to miss reception, like I was, you'll need to call to a local Krakow number to get instructions over the phone. I'm not sure how this would work if you don't speak either Polish or English. The street it is on has a fair bit of noise, their phone lines are terrible, and it is incredibly difficult to hear/understand their directions. All of the instructions given could have been provided via email ahead of arrival and reduced the stress of check-in by an order of magnitude. I would hate to attempt check in late in the evening.
I saw another review complains about the floor boards and thought they might be exaggerating... Nope. Not only do you hear your every step but anyone in a nearby rooms, too.
All of that said; it's a very convenient location, well priced, with nice facilities in the room (desk, air-conditioning, clothes racks, etc). There's near by cheap places to eat breakfast as well as all your usual tourist attractions.
