Key legal question
Whether the cantonal appeal against the cost ruling was timely despite the incorrect legal remedy notice
Extracted holding
The tenant could rely on the incorrect legal remedy notice; the appeal had to be treated as timely.
Extracted reasoning
For a legally represented party, only gross procedural negligence defeats reliance on an incorrect remedy notice. The applicable appeal period was not clearly ascertainable from the statutory text alone, so the party's reliance was protected by good faith.