If a player's spell gets countered do they still get the abandoned hall buff?

No, the player does not receive the buff from Abandoned Hall.

According to RiftJudge FAQ #10217 and Rule 425.1.b, a spell that is countered is not considered to have been "played." Because the triggered ability on Abandoned Hall requires a spell to have successfully completed its resolution process to count as having been "played," a countered spell fails to meet the trigger condition.

Why this happens:

1. Countering: When a spell is countered (e.g., by an opponent's [Reaction] spell), it is cleared from the chain and removed from the game process immediately.
2. Resolution: Because the countered spell never finishes its resolution process, it is not considered to have been "played" in the eyes of the game rules.
3. Trigger Failure: Since the trigger condition "when you play a spell" is never met, Abandoned Hall's ability never enters the chain.

This interaction is consistent across multiple FAQs, including RiftJudge FAQ #10782 and RiftJudge FAQ #10646, which confirm that countering a spell negates the ability to trigger "when you play a spell" effects.