EVA has its own lounge at the dreaded TBIT. Like every other lounge at this swell terminal, it is a small, non-descipt cube crammed with non-descript furniture serving booze and lousy snacks. Sadly, there is no WiFi either (unlike their competitors at China Airways). Shared lav's for all the lounges, with no showers.
I suppose staying in this lounge is better than hanging out in the departure area. Keep your expectations low ...