Berserker coldly observed his Master as she addressed the rest of the people gathered in a very rude manner. If he was still the man who he was in life than he would've a hearty laughter at her spirit while at the same time showing amazement at someone who would be so dedicated to being insufferably arrogant that she or he would translate their mockery into several different languages. Seeing someone try so hard was even somewhat cute, to be honest. 

But Berserker didn't do anything. He wasn't able to. 

Instead, he obediently followed Rika out from the barn, ignoring everything said and done by other Masters and Servants. Lancer and Saber almost starting a fight while still in the building made Berserker pause for a moment, but feeling their killing intent disappear after their Masters intervened he continued walking behind his own Master. 

He wouldn't give any advice on where to go and what kind of place they should make into their base of operations. His was not the role of advisor or companion, only that of a weapon to be used in battle. Opinions were unnecessary for weapons.