Rows of terraced stone houses climb the hillside here, tight streets built for a mining population that has long since moved on to other work. Front doors open straight onto the pavement, cars are parked nose to tail, and the valley itself does most of the talking — you're never far from a view up rather than out. It's a settled, unshowy sort of place, and the people who live here mostly grew up here or nearby. House-hunting in Mountain Air means one conversation, really: terraced, freehold, and inexpensive by any national measure. Nearly all sales are freehold houses, the vast majority terraced, and a typical property changes hands for around £127,500 — well under half the Welsh average house price. That affordability shows up in the council tax band D figure too, which sits above the Welsh median, so the tax bill doesn't track the low purchase price quite as generously as you'd hope. Two community primaries, All Saints R.C. and the larger Willowtown Primary, serve local families, though Wales's schools are inspected by Estyn rather than given Ofsted grades, so judging them means talking to other parents rather than reading a rating. There's no rail station named here, and the practical shape of daily life — work, shopping, anything beyond the immediate streets — likely means a car. This is where the numbers ask for a second look. On paper, Mountain Air scores well: safety grades at the top of the scale, affordability, connectivity and housing all comfortably above the Welsh average. Full-fibre broadband reaches nearly seven in ten homes, which is a decent quiet asset for a small hillside suburb. Yet the area sits in the second-most deprived decile in Wales and the very lowest income decile, and the crime rate — while low in absolute terms across a population of under a thousand — runs far above the Blaenau Gwent average once you compare rates rather than raw counts, driven mostly by violence and anti-social behaviour categories rather than burglary or vehicle crime, which stay low. That mismatch between a genuinely safe-feeling streetscape and a statistically elevated crime rate relative to its own council area is the thing worth sitting with rather than resolving. It suits people who want a small, close-knit community with low buy-in costs and don't need to be near a station or a nightlife strip — the nightlife grade here is middling, and there's no pretending otherwise. It's less suited to anyone whose daily rhythm depends on rail commuting or who wants their child's school judged against a familiar ratings system. If you've priced out more expensive parts of Wales and want space, a hillside view, and a mortgage that doesn't dominate your thinking, this is worth walking around before you decide.