candour = the quality of being honest and straightforward in attitude and speech
candidness, forthrightness, frankness, candor, directness
honestness, honesty - the quality of being honest
ingenuousness - openly straightforward or frank
2. candour = the ability to make judgments free from discrimination or dishonesty
candor, fair-mindedness, fairness
impartiality, nonpartisanship - an inclination to weigh both views or opinions equally
Candour and directness mean the same thing. Your sentence means that the people saying this appreciate your honest and forthright views. It is often said by employers interviewing job candidates.