This string is really hard to translate to other languages (those languages
where genitive suffix depends on gender, word form, etc.).

#: gtk/gtkfilechooserdefault.c:528
#, c-format
msgid "%s's Home"

General guideline should be to avoid string composition when it's possible,
and even more so when '%s' can be free form (i.e. there's no fixed subset
of possible values).

So, perhaps it's better to have simply "Home"?