Travel / Various general questions about Poland / Krakow [3]

Hello! New to the forums :)

Me and my friend are travelling to Krakow 9th december.
We will be staying at Maly Krakow, does anyone know that place? If it's any good? I understand that it is close to the train station and the center of the city?

We will also be visiting Auschwitz, I know that you can go there by bus or train, and I guess that wont be a problem. Anything I should know?

I also want to know what the general age limit to clubs in Poland is?

Thank youuuuu :)