There are a couple of top 100 climbs in Matlock – Riber and Bank Road. The latter was featured on the women’s tour this year, but the former is steeper (and really tricky when damp). the A6 through Matlock Bath is quite spectacular, but will be busy on a BH.
There’s loads of nice roads to the North and North West of where you are staying, just go and explore. Last year I found myself unexpectedly gate-crashing a street party in Elton and being greeted with the words “We have too much cake, please eat as much as you can”.
Then again last Sunday I rode to Carsington from Sheffield and had to dodge a cow that jumped over a wall straight onto the road.