I second Nordstrom, whether you're just looking or out to buy a new wardrobe, you get the same level of service. And they know when to back off and let you be, if that's how you like to shop.
Vera Bradley, whether their CS, signature stores or outlets. Everyone is nice, friendly, and will go the extra mile to help you with whatever you need.
Various Hampton Inns. My mom prefers them whe we travel since have shown themselves to be the best accessible rooms. On our trip last year, while it was HC accessible, it wasn't quite. So my mom, not to criticize, but more to let them know hey, this really doesn't work for someone in a wheelchair, wrote a letter, and the manger called her, and asked for her input on several things she had mentioned, i.e. the shower bench being at the opposite end of the tub from the hand-held shower head, and so on. And all the ones we've ever stayed in have been clean, neat, and if you need something, they're willing to do what they can to help you get it.