Genuinely both. Corner lots split the buyer pool rather than growing or shrinking it — and in this city the deciding factor is usually snow.
Some buyers search for corner lots on purpose and some rule them out before they see the inside. That is different from a feature everybody wants a little, and it is why the same corner lot can sell quickly and well or sit for weeks depending on who is shopping that month. It also means the marketing has to find the right buyer rather than the average one.
Ask which corner, not whether a corner. Two quiet residential streets is a completely different property from the corner at a school drop-off or the entrance to the community.
Walk the length of sidewalk you would be responsible for and picture it after a heavy snowfall. Then visit at eight in the morning on a school day. If the side access solves an actual problem for you — a trailer, a workshop, a suite over the garage — a corner is often the best value on the street, because you want the thing other buyers are discounting.