This supposedly professional hostel was TERRIBLE in communicating. They didn’t send any advance note or instructions for how to check-in, before the actual date of check-in, at 12o’clock noon. Nor did they respond to my messages enquiring about check-in. They did answer the phone when I called, but you wouldn’t expect to have to call to get info.
Anyways, once the details were sorted out, check-in was easy (number codes and a lockbox), they were ok with me leaving my bag in the room a bit early, and the place itself was super clean and quite nice, although small. The location was great.
So, don’t expect any notice until the same day you’re supposed to arrive. If you can handle the excitement of not knowing how to get in, you should be ok.