We have just spent a long weekend at The Firs the wardens are lovely and the site so clean, great for couples who want to get away from it all, nothing for kids really.  The Toilet block is super clean, loads of showers, toilets and space.  No walks and biking is not really available unless you are a experienced biker.  Had to use the car to go places, Belper is lovely and Strutts Cotton Mill is good value at £4 pp, for a guided and informative tour. Went to Ecclesbourne Railway for an evening meal on the steam train, well worth it and worth a visit just to see their railway station, trains etc., run by volunteers, go and have a look to see their great work and what they have achieved. Enjoy!