The library on board the Celebrity Equinox. The design of the library is a bit different from the Celebrity Solstice's. I think I prefer the Solstice's library, namely because these high chairs on Equinox remind me of the haunted mansion ride at Disney World.
Also, if I'm not mistaken, these are the same chairs you'll find at Tuscan Grille, but with a different upholstery.
Here's what they did on the Solstice: