The mill is quite good as it’s on ground level and you can walk straight into the seating area with no steps . Then just try and get an aisle as near the vomitary as possible.
Balcony bar is on 3rd floor but lift/escalators and the balcony only has a few rows so not many stairs
Most stairs are in club Coventry and they are steep but don’t think you will get in there this season anyway.