In Dark Descent (2013) Stella meets DS James Olson and invites him to her hotel room, she tells him her room is 203. In this episode, the room number is 529. It's possible that she would have switched hotels once the media found out she was at a swanky hotel but it is never explained in nor does the room appeared to be a different layout since Stella arrived in Ireland.
In Dark Descent (2013) when Stella invites DS James Olson, she says that she is staying at The Hilton. When Paul shows Katie the newspaper clipping it says The Metropolitan Hotel.