There are no alternative places. It is absolutely not clear how to pay. in fact, there is not a single pointer. The specified payment options are not valid. In fact, you're standing up to a fine.
It is almost impossible to find a place. It's better to leave the Galleries in the parking lot - at least it's safer there under the roof. 3 rubles for the first three hours. And here they just take money without providing anything in return.