It's a great view, but not for almost $20 USD for two people.
You walk in, get your tickets and then are crammed into an elevator like sardines in a can. Upon arrival you're besieged by a bunch of people dressed like Aladdin characters trying to get your to drop 5 Euros on a stupid picture with them. Once you fight them off, you're tramping up two flights of stairs to get to the view.
Once you're there, you're spending your time trying to squeeze past a bunch of people in the ridiculously small walkway around the tower (good luck if there's a tour group of fat Americans!), to get a view of the sights. The view is great, but not like looking at Mona Lisa or something.
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