Re: Our location...
(Not sure if that's a sincere question or a joke...)
By definition, we're exactly in the middle of our Hubble Volume, which is the same as the knowable universe. Whatever we find out about the knowable universe becomes part of the "known universe".
And nothing we do can ever have an effect outside our Hubble Volume, so "knowable universe" is a suitable proxy for "entire universe" for nearly all purposes.
That's one possible answer to the question of "where are we in the universe"?
Another interpretation is "given what we believe we know about the universe, or think is the most plausible among various theories, how are we situated among much-larger-scale structures"? I don't really follow the field, but the latest I've seen is that the Milky Way is part of a galactic supercluster astrophysicists call "Laniakea", which is really quite large, and that is part of a larger arrangement of superclusters that's so big that "where are we inside it" isn't meaningful.