I would not recommend going to 257 with the intention of having a good time playing arcade games. Their selection is fairly limited. As the name implies, it's good if you just want Pac-Man games, and mediocre for much else.
It's definitely not on the level of Galloping Ghost, for sure. It's more of a place you go to if you want to do a mixture of bowling, food, and (Namco) games.