I think comparing Pop Century to a Days Inn is incredibly unfair and inaccurate. I can't recall a Days Inn, or any Holiday Inn either, that included multiple pools, a fully equipped food court with such variety, free and reliable transportation except for an airport shuttle, a wide variety of children's activities, immaculately mannered grounds, a pool bar, etc. Any hotel is going to show wear and tear over the years, some rooms more than others, depending on how guests abuse them when they stay. Pop was last retouched in 2010, so I imagine in another 2 years or so, it will be getting another facelift with new carpet, paint and furnishings.
I think going into a Value with appropriate expectations is key. At any level of hotel, you should expect a clean and comfortable room. You can't expect the finishes or theming or amenities of moderate or deluxe resorts.
Out of curiosity, I wanted to see which of Disney's hotels ranked the highest on TripAdvisor.com
I bet it would surprise you that Pop outranks both the Polynesian and Contemporary Resort. Pop Ranks #88 out of 329 hotels. The Poly and Contemporary are #99 and #129 respectively. Even Disney's Crown Jewel, The Grand Floridian, only ranks #77. In case anyone was wondering, Disney's Wilderness Lodge ranks the highest, at #16. Very eye opening to me! Those people are paying nearly 4x the rate for their room, and are leaving less satisfied!