I'm not current on lounges/clubs but the restaurant scene is excellent in Seattle depending on what you want and where you are staying.  Lots of great seafood places including Aqua downtown and excellent steakhouses like John Howie and El Gaucho to name a few.   (inbox me if you want some specific suggestions)  Some amazing Art in Seattle but the one that always blows me away is the Chihuly exhibit right next to the Space Needle--he is arguably the worlds most famous Glass Artist and this place is worth every penny of admission.    Lots of good art galleries and stuff in the downtown area as well.

Pacific Science Center, Pike's Place Market, Pioneer Square are some of the main Seattle attractions.  Plenty of top-notch restaurants available...Metropolitan Grill is pricey, yet highly reviewed, is one.