Short version: disorganized and smug.
I had a brief phone screen with HR, followed by a phone interview with the hiring manager. Things went very well initially and we seemed to be on the same page, so she invited me to headquarters for an in-person interview with herself and several colleagues.
My itinerary was a complete mess. The car service didn't show up at the airport, so I called and they said they had no reservation under my name. Nobody at Marriott was available to confirm, but thankfully they took my word for it and sent a car that was billed to the company. When I checked in at the Bethesda Marriott, they tried to bill me for the room because the reservation said nothing about me being an interview candidate and contained no payment info. Again, they took my word for it and sorted it out. I caught the shuttle to HQ the following morning and arrived at 8:15 AM as my itinerary instructed, then sat in the lobby for 45 minutes because nobody I was meeting that day had arrived yet. The whole process was disorganized and not what I expected from a company that prides itself on its hospitality. I've interviewed with small startups that provided painless arrangements and treated me with a lot more respect.
I was supposed to meet with 5 people that day, but one was dropped from the schedule with no reason given. Of the hour I had with each interviewer, at least half of that was wasted on asinine questions based on the STAR system, which was cutting edge in 1976 when I was born. Despite this role being responsible for design, I had no interviews with any actual designers, just management. I also didn't meet with anyone from IT–a key partner to design. It was clear from my discussions that day that the relationship with IT is strained.
The last person I interviewed with was a VP who took the day off and interviewed me over the phone. She spent a lot of time talking about "innovation" and other buzzwordy nonsense. She also namedropped the previous employers of a few of their current designers and implied that I might not be up to managing such a group, which is a pretty smug attitude from a company with a fairly mediocre web site.
They thanked me for my time and invited me to e-mail them if I had any additional questions about the role. I followed up twice over the next 2 weeks and never received a reply. About 3 weeks after my interview, I received a canned HR rejection e-mail.
I've had really great experiences with a few companies who ultimately decided I wasn't the right fit, and that was just fine because they treated me with respect throughout the process. Marriott provided one of the worst interview experiences I've had in my 15-year career.