People tend to check in during these times:
There's a secret garden near the Council offices that is occasionally open for special events - check for notices on the gate.
Great for sledging when there's snow on the ground. Try the hill near the Bishop's House entrance.
If you bring your dog please practise responsible poopascooping.
If you go down the hill on the left there's this insecure crib you can climb into
For the one of the best views of Sheffield city centre around, sit on the bench at the top of the hill near Bishop's House - located exactly where the park geotag is - I'm sat there now on a sunny Sat