Went to Pittsburgh for a wedding that was held across the river at the Grand Concourse. Everyone else stayed at the Sheraton, which was $20/night cheaper but a lot closer. Turns out, the rooms (and everything else) at the Sheraton were well below average, while everything at the Fairmont was 5 stars. Best $20 I ever spent!
The staff was incredibly friendly and helpful, including giving us a (free) ride to anywhere that was local. The rooms were beautiful, from the bathrooms to the office area. Our room had an incredible view of the baseball stadium at no extra charge. Also at no charge was internet access (I just had to sign up for a free member program - no big deal). This may be the best hotel I have ever stayed at, but not even close to the most expensive. I can't say enough good things about it.