Some people here will insist you are due a lavish service recovery offer. Other people (myself included) will say that since you declined a room change, you really aren't due anything. You'll need to decide what you feel is right because there's no definitive answer.

That said, I see nothing wrong with asking for some small gesture because the hotel tried to fixed the issue, failed, and didn't follow up to let you know the result.

Also, the thought of anyone trying to invoke a 100% satisfaction guarantee over a slow drain (after declining to change rooms) is disappointing.