The first clue, "Keycards", opens the board with intentional ambiguity. In Pinpoint, a single clue rarely proves the category — it is a starting hypothesis, not a verdict.
"Electric kettles / coffee makers" narrows the field. A valid category must explain both "Keycards" and "Electric kettles / coffee makers" with the same rule — not two separate stories.
By "Toiletries", the category "Things associated with hotels" should start to feel inevitable. Three clues with one rule beats three clues with three excuses.
"Continental breakfast" adds another member of the same set. Each new row should strengthen "Things associated with hotels", not send you hunting for a new theme.
"Room service" is the stress test. If "Things associated with hotels" still fits naturally here, the puzzle is solved; if not, your category is too narrow or too broad.
Read together, "Keycards", "Electric kettles / coffee makers", "Toiletries", "Continental breakfast", and "Room service" converge on "Things associated with hotels". That convergence — one precise category, five varied clues — is the structure Pinpoint rewards.