Convenient/comfortable, but...
The Hyatt at Denver Tech Center was convenient in terms of location to the wedding destination I was attending. Check-in service was fast, friendly, thorough, and detail-oriented. The room was nice. Beds were a little saggy, but that doesn't bother us. They did offer a smoking-room option on the 3rd floor. The bathroom and shower were nice and modern. The hotel offers a second-floor cafe and a sports bar, both of which are nice enough. 
My criticisms are as follows:
1. Walls are paper-thin. Within 30 minutes of arrival, I was preparing for a shower, and suddenly jumped almost out of my skin because I heard the sound of a deep bass, male voice that sounded like it was RIGHT behind me. Fortunately, it was out in the hallway. Unfortunately, it seemed like the walls were built to CONVEY such noises as opposed to blocking them out. 
2. Parking. The only parking option made known to me after asking multiple questions about it was to pay $10/day for the parking garage. This is something we're just not used to having to pay for at hotels. You get unlimited in-&-out privileges for the $10/day, but still...
3. Wi-Fi. This is honestly the first hotel we've ever stayed with that charges for ANY wi-fi access. I am sure this fee subsidizes the Hyatt to keep new, stable, and fast equipment on hand, or at least I hope it does, but I am of the opinion that there should always be a free option, even if it crawls. Two options - standard and premium, and both cost at least $10/day. 
4. Brunch service for a group. I happen to know that the bride and groom for this wedding were on-the-ball (they live in Denver and are very familiar with this hotel) and booked their room block and brunch accommodations when no other wedding parties had booked. Despite their diligence, two other sizable wedding parties (comparable in headcount to ours) were seated and served first (even though reservations were at the same time). Also, I would be remiss to fail to mention that we weren't even allowed to SIT DOWN at tables until almost a half-hour after the reservation time. Furthermore, NOT ONE of the management staff that were regularly milling about the second floor talking on their earpieces and smiling at all the folks who apparently deserved to sit down more than us took time to stop by and see why about 30 people were clogging up the second-floor balcony. 
On a positive note, the bright side of the store was a young lady named Charlotte, who did the job of a manager and very bravely approached our group to see why we were congregated there without being seated or served. Charlotte did what her managers simply chose not to do, and IT TAKES GUTS to walk in to ANY crowd of people and find out why they're not receiving the service they paid for (not to mention, it was a wedding group, which means there was a bride involved who did NOT get what she paid for out of her wedding reservation! Danger danger danger!!!). I was very surprised at this, given that any wedding party has the potential of 30+ referrals or more, and it wasn't until Charlotte did her job that some manager finally came scrambling over to apologize all over himself. 
5. Check-out. This was done in-person, and I was never given a full confirmation that I was even checked out. I got a receipt printed, but I didn't have time to stick around while the service desk fellow gave me cheesy smiles and told me that brunch charges still hadn't hit my account, so he couldn't check me out...the staff knew I would be participating in brunch that would be charged to my room, and were made aware the day before. Seems like it could have been made a little more efficient there. 
Overall, the essentials were there, but if I'm spending triple figures on a hotel room, I don't want to be nickel-and-dimed for every little add-on (and especially not to park there). We slept and bathed just fine, so if I have cause to be in the Denver downtown area, I wouldn't mind staying there again. 
For business travelers checking in solo or in pairs, thumbs up. Groups: beware of failures in service if you book during peak times!