I'm not sure I understand what was poor about the set. It was graphics-heavy, interestingly lit, full of classic Wrath of Khan props, had an ambitious aft ramp imitating that of the E-D, and was really littered with furniture (but of a pretty consistent style) in comparison with all the other TNG guest bridges.
Something like the Brattain
bridge I could easily see as "poor", because it had cheap-looking flat plywood walls basking in unflattering illumination, limited graphics and detail, and the only thing really going for it, the complicated layout, did not appear particularly functional or sensible. But the E-C seems like a lot of effort went into her, both workmanshipwise and in terms of conceptualizing.