The situation
This message arrives the day after a neighbor reduced the volume.
English meaning: It was quieter than yesterday, which really helped. I'd appreciate the same level tonight.
Read the Japanese original
昨日より静かで助かりました。今夜も同じくらいだとありがたいです。The questionWhat combination of functions is present?
Read the explanation
Clues in the scene
It was quieter than yesterday, which really helped. I'd appreciate the same level tonight.
The second sentence adds a request about tonight to the acknowledgement that the quieter sound helped.
Each choice explained
Thanks for improvement and a request to continue — Best fit
The message both thanks the neighbour for quieter sound and asks for that level to continue tonight.
Only criticism of the past — Does not fit
Criticism alone misses the explicit acknowledgement that the improvement helped, as well as the reference to tonight.
Lifting volume limits tonight — Does not fit
The quieter level is the reference point. Permission to turn the volume back up would reverse the request to maintain it.
Denial that it was quieter — Does not fit
The speaker affirms that it was quieter and helpful. Denying the improvement contradicts that evaluation.
Same words, another scene
After a theatre rehearsal, a sound manager evaluates a quieter audience announcement and uses the same two sentences to request the same setting for tonight’s performance.
Thanks and a continuation request remain, but the residential complaint context disappears. The wording alone does not determine the setting or relationship.
We will keep the announcement at the level we just checked for tonight’s performance.
Literal meaning
The speaker says the quieter sound helped and hopes tonight will be at the same level.
What these words cannot tell us
The exact change in volume, whether satisfaction will continue and expectations at other times are unknown.
A question to ask in real life
Would it be comfortable if I keep the same setting tonight?