Complex sentence: This station is one of the few surviving of the first stage that remained more or less unchanged since opening (compared with Lubyanka or Chistiye Prudy), except for resurfacing the platform with granite (instead of original asphalt) and lighting.
Split into simpler sentences: This station is one of the few surviving of the first stage that remained more or less unchanged since opening (compared with Lubyanka or Chistiye Prudy). Except with resurfacing the platform with granite (istead of original asphalt) and lighting.