Complex sentence: The facility seats 18,000 people and includes a smaller venue, The Muse Mixing Room, which is a live-music venue with raised tables and seating that overlooks the main dance floor and stage.
Split into simpler sentences: The facility seats 18,000 people and includes a smaller venue, The Muse Mixing Room. Which is a live music venue with raised tables and seating that overlooks the main dance floor and stage.