I will be celebrating a big birthday in Tucson this winter and would like to go out somewhere interesting. We like all food, cost doesn't matter, but I am looking for a unique, memorable experience and a comfortable setting more than fancy food. Any ideas?

The Grill at Hacienda del Sol, excellent food in a beautiful old traditional hacienda in the foothills..You can also stay there.
Cafe Poca Cosa..creative Mexico City cuisine,downtown.
Feast
Acacia
Downtown Kitchen and Cocktails

Thanks for quick reply.
My friend who lives in Tucson had suggested Poca Cosa but having never been there was not sure if it was comfortable. What do you think about that aspect, Happy?

For Tucson, it has an urban vibe. Contemporary setting, Mexican artwork on the walls. Can't recall the seating but if it weren't comfortable I'm sure I would remember it. Is that what you mean by comforatble? Your friend could pop in check that out if she's downtown. Menu is on a blackboard and I usually pick Chef's Choice with several portions of her specials.. Dishes all come with salad on top of them. Susana Davila is the chef/owner.
For another non-birthday dinner, I highly recommend Feast.
HappyTrvlr

yes, I will send my friend to check chairs. I find it hard to enjoy a leisurely dinner perched on an uncomfortable chair.

Will check out Feast too.

I can only think of a few places in Tucson where we have had uncomfortable chairs and I didn't mention them..
Add Tavolino to your list too.. as well as the others I listed earlier.