Margam Castle

You get what you paid for. For a 2-star hotel, it is excellent. Perfect location, 6-min walk from the train station, and you are right in the city centre. Steps from the famous historic arcades and Cardiff Market. Their staff, especially Alison, are super friendly and helpful. Yes, it is an old hotel and the facilities may be a bit dated. They use physical keys for the room, and you have to leave your key at reception when you go out. But all of those are fine. The only downside is that the whole building is currently under construction, so there are scaffolds right outside the window, which made me feel a bit insecure.