Ystalyfera sits in the upper Swansea Valley, terraces climbing the hillside with the Tawe below and the old industrial valley sides still visibly shaping the streets. It's the kind of place where the housing stock tells you the history before anyone speaks a word — rows of stone terraces mixed with detached houses on the edges, built for a working valley, not a commuter suburb. Welsh is very much a living language here, not a heritage detail: two of the local schools teach through the medium of Welsh, which says something about who chooses to settle and stay. The practical picture is a mixed one. There's no rail station listed for the village itself, so this is a driving valley rather than a train-commuting one, and with 72 transport stops but no rail link, bus routes will do the daily work. Schools are plentiful for the population — five serving under 2,500 people, including Ysgol Maesydderwen for secondary and smaller primaries like Godre'rgraig and Ysgol Bro Tawe — and the overall schools grade comes out well above the Welsh average, though Estyn ratings aren't broken out here so you're reading reputation rather than inspection grades. Housing is where the real signal sits: a typical property sells freehold, detached homes dominate the sales mix, and at a median of £133,000 you're roughly 5% cheaper than the wider Neath Port Talbot average and well under half the Welsh median house price — this is a valley where your money still buys space. Green space is generous relative to the size of the place — 35 sites across nearly 24 hectares for a population of under 2,500 — and the environment grade reflects that sense of openness rather than density; population density here is a fifth of the Welsh average, so this doesn't feel crowded even on a full street. What the numbers don't let you look away from is crime: the overall pattern earns strong grades almost everywhere except safety, which sits at a more middling B+, and the detail matters — nearly half of recorded incidents are violence and sexual offences, and the area's crime rate runs well above the Neath Port Talbot average. That's the one grade that breaks the pattern in an otherwise strong scorecard, and it's worth sitting with rather than skimming past. This suits someone who wants a valley community with Welsh-medium schooling on the doorstep, space for the money, and hills rather than a high street social life — and who's comfortable driving rather than relying on rail. It asks you to make peace with a safety grade that lags behind the area's other strengths, and to look at the crime breakdown yourself rather than take the overall "A+" at face value. If both of those sit fine with you, the rest of the picture — affordable housing, decent schools, room to breathe — holds up well.