Beef Kaldereta: 2/5. Other than beef, the only other ingredient they used was carrots. How about some peas or green/red peppers?
Milk fish with vegetables: 4/5. They had a good mix of ingredients, which blended well and made the fish taste pretty good.
Lumpia Shanghai: 3/5. I doubt their lumpia shanghai is homemade. You can go to Chinatown and fry up your own (usually around $10 for 30 pieces) and it'll taste just as good.
Chicharon Bulaklak (pork ruffle fat) : 4/5. I love this appetizer. Unfortunately, they don't always have it.
Summary: Fiesta Filipina is a decent option if you're in the area and starving for filipino food.