Really cool idea that unfortunately didn't really deliver for us.
Fairly inexpensive, so our expectations may have been too high, but we came with a large party and the speed of service was extremely slow. We often ran out of water, even with bottles on the table,band most of the time when rounds of pizza came out there wasn't enough for the whole table to try one or both. This speed of service was also terrible for our vegetarian diners who sometimes got nothing to eat for long stretches since both available pizzas had meat.
Parking was also fairly expensive for a dinner and the signage was somewhat confusing, though that might have more to do with the hotel signage than the restaurant.
The staff were pleasant and kind, and the pizza itself was quite good and fairly varied in type. Though we personally weren't huge on the dessert pizzas, that felt more like preference than a quality issue.
I think this would be a great place for take out or room service.