Zara has a couple of instore brands. TRF is for teenagers/early 20s - t-shirts, lace, really short skirts, leggings... Basic is a bit older, yes they have workwear (I'd consider it more useful than boring, it's not Next like, and the suits are usually a nice really sharp fit) but also some really nice dresses and nice pieces, fantastic shoes, and the occasional random weirdly shaped fashion item. Woman is more expensive and aimed at late 20s, 30s, has more tailoring.
It's never going to be neon and bling - it doesn't need to be. It'd be a bit useless if every brand was the same spandex and sparkle as RI, or too cool for school like Topshop. When it comes down to it, it is a Spanish brand and that's the ethos and style and inspiration behind it, and it's different to what comes out of the UK.
It's not going to fit everyone's personal style, no store will - for example I wouldn't cross the threshold of River Island, but others love it.