Well that would only show (if indeed it can leak somehow) that somebody used Mullvad to search for that - if using it for yourself it wouldn't be hard to say "c

Well that would only show (if indeed it can leak somehow) that somebody used Mullvad to search for that - if using it for yourself it wouldn't be hard to say "cafe near 49 my street" rather than "44 my street", or whatever, so a) that's probably the kind of caution you should always use if wanting to protect privacy or your house number since there's essentially no downside, unless you're literally ordering something to be physically delivered and b) it gives plausible deniability that anyone whose house address were known to have been searched doesn't really mean the person living there is the one who searched it. (But of course, ideally they would have something in place to prevent such a leak at all, and perhaps they do somehow?)