First thing is... this izakaya is crowded on the weekends! Even on the weekdays, it's pretty busy. The staff is friendly with everyone greeting you as soon as you come in.
Ichiza's pretty easy to find. It's on the left side of Spring Mountain just before Arville if you're coming from the strip. It's in the plaza with the big Korean BBQ sign on the second floor above Tea Station and next to the Crown Bakery store.
If I'm there for a meal I'll order something like the Ramen DS with Kakuni (pork belly) or I'll just order a pitcher of Kirin when I'm there to just hang out and eat some appetizers like the beef tongue and chicken gizzards. I enjoy the unique spread of food on the menu as well as the wood interior and the paper menus posted on the wall.
This place has great food, drinks, and a great atmosphere (unless you don't like crowded places). I definitely recommend it.