From junction 40 (Penrith) of the M6 take the A66 going Westwards towards Keswick. Continue on this past by passing Keswick until reaching the left turn off for Portinscale and the Newlands Valley. Take this turning and go past The Farmer's Arms pub on your left and continue to follow the road until sign for Derwent Water Hotel to the left. Take this turning and then turn immediately left again into the car park. Facing you at the far end are the Tower Cottages situated on the right hand side of the gravelled track where offloading is permitted.
You can off load luggage outside the cottage but parking is on street a little further down from the cottage. Retrace your steps to where you turned in left behind the building and turn left down the street for unlimited on street parking (this is a quiet area with no through traffic). Please note, availability of on-street parking does depend on the time of year. During peak season, on-street parking can be limited but space can usually be found further from the cottage.