For myself, swmbo and the dog we got up into Mid Wales and did a loop along Caban Coch in the Elan Valley, then up and over Y Foel, didn’t see a soul until we rejoined the road to get back to the car. There is a bothy (well two actually) in the area, one of which we really fancy having a night in, never stayed in a bothy before but I’m a certain border collie would love it.