This is a solid 4.5-5 star place. The prices may be higher than we all want to pay, but they are right for the value delivered. The servers are as good or better than any other bar in CU that comes to mind (and, for better or worse, I drink nearly everywhere).
The place where Boltini really stands apart (for me) are their martinis and mixed drinks. If you order a dirty martini, for example, but specify that you want it only a little dirty they'll get it just right. Their Old Fashioned is quite a production. I forget what all Robb (mgr) put in it, but it was delightful.
My absolute favorite mixed drink at Boltini is their Sugar Plum. It sounds pretty froofy, and it is indeed delightfully delish, but this straight arrow stands behind this very strong and very purple (tasting) beverage. I am not sure if the fact that I order mine without sugar on the rim of the glass makes my Sugar Plum swilling any less emasculating, but I do want that fact noted for the record.
Lastly, Boltini's hosts 'Tuesday Night Trivia', starting every Tuesday night at 7pm. It is a lot of fun and all you have to do is come with a friend or two or 4 (I think 5 is the max, but it may be 6) and let them know your team name. At this trivia night, as opposed to Canopy Club's, which takes place at the exact same time, team names are punny, but not perverse. The host(s) pass out answer sheets for you to fill in and ask several rounds of questions over the PA. Dont be afraid to ask questions if you are curious.
Competition is fun, and the whole thing lasts about 2-2.5 hours. Winners get prizes, including free drinks, appetizers, and even massages. The crowd is good: think professionals, teachers, librarians, grad students and profs. I don't go regularly anymore because it is just a 'lil too dear and also a 'lil to slow. Canopy Club's questions come faster. NTN trivia at BW3's is faster still.
Park behind Boltini's in the lot.