It's supposed to be adjacent to the Hyūga, so it's a pretty swank area. I believe it's been shown that your gate lets out onto a reasonably large street and there are shops across it. I don't know that we've given exact walking times to Hokage Tower, but those would be deceptive anyway -- ninja can move on the rooftops where there's no traffic and they can run 20mph. Leaf is huge for the times but it's not that big in square area, so a ninja can cross it pretty quickly.
Walking time is still of relevant for anybody who's not a ninja, such as Uchiha cousins we'll be adopting in.