Looks like a fun gimmick, and at ¥2300 (US$16), almost cheap compared to the absurdly overpriced US$335 espresso! 
If you’re mostly interested in the stylish retro vibe of the Nishimura cafe – which is a chain with several uniquely styled branches (the ice block only is available at the Kitanozaka location) – they also have a regular iced coffee for a more reasonable ¥700 (US$4.85).
