I've heard mixed reviews about this restaurant and this is the second time I've eaten here. A friend was here earlier this week for his wife's birthday dinner and he complained about how expensive it was ($230 for dinner for tw and one alcoholic drink for one person). I would say if you want to enjoy the experience and pay as minimally as you can, go for lunch on someone's birthday or when celebrating a special occasion. Menu is pre-fixed for $56 two-course or $69 for 3-course. If you get the two course and it's for a birthday you can let them know and they'll bring our a birthday dessert (chocolate lava cake) so you'll get a free dessert. The food is pretty good. We got the mushroom soup to start and salmon as the entree. My mom and husband enjoyed it. I got the pumpkin and onion tart to start and the chick pea and purple cornmeal polenta as my entree. The only thing I didn't like was the pickled carrot and celery on the pumpkin tart...it was as sour as eating a lemon- no exaggeration! Portion sizes are decent. You get bread and whipped butter to start so all together it fills the stomach.
As for ambiance, you don't get any higher than this. Beautiful view of the city and I LOVE the revolving concept. There's no bad seat in the room because after an hour and a half you'll get the 360 view. It's the perfect place to celebrate a milestone or a special occasion. I booked through Open Table and let them know it was my Mom's birthday and I didn't have to remind them about the candle-lit cake at the end - they brought it out after our meal.
Once you're done eating, you can go down to the lower level to the observation deck and then a level below that to the glass floor.
Mom enjoyed her birthday and husband was satisfied.