I have already written a few reviews for Rebecca this year, detailing my stay at her house and the things you can do around it. So please check out these reviews.
Currently, I often take the bike into the hills to walk the Pentland Crest, 18 km over 5 or 6 hills. Really great to do. And of course, there are shorter walks too, around the reservoirs. If you have a car, you can park at Hawlaw house and start from there.