Upgraded rooms are nice; older rooms are very dated
I recently stayed at the Omni for a weekend trip to Austin. It's in a good location downtown with some things within walking distance. However, in Texas style, you'll need to drive most places. Valet parking is available for $25/night.
Friday night we were given an old, unrenovated room. While it was spacious enough, the decor and finishes were extremely dated and not of very high quality. I thought to myself, "This does not look like the pictures I saw before booking." Regardless, it seemed alright, until 8 or 9am on the dot Saturday morning (I can't remember exactly, as I've tried to block this from memory) when the renovation construction in the room DIRECTLY next to ours started. That would be sawing, drilling, and hammering into the other side of our wall. We'd had a late night out on the town the night before, and these were VERY unpleasant sounds to wake up to. The loud music played by the construction workers over the noise did not help.
We talked to the front desk and told them about the unacceptable noise and that we would need to move, which they said they could *try* to accommodate (note: they did not guarantee the move, which I think is the wrong thing to say here). Luckily, late that afternoon they said they could move us. We got switched to a newly renovated room which was a bit smaller but had high end finishes and no construction noise. They also offered to comp us with free breakfast (we already had plans) or wine (we were about to leave for the evening), so they instead removed a night's charge for valet, which was a nice gesture. 
While the 2nd room ultimately ended up being nice and they made up for the inconvenience, the stay was overall a wash, based on the not-so-nice room the first night and the ridiculously loud (and early!) construction noise. I also felt a little misled based on photos of the property I'd seen before arriving. I likely won't stay at the Omni in Austin again but do give them credit for making my stay a lot better for the 2nd night.