Hope you don't mind me joining the debate but I am also trying to install Open Office and am running into problems. I'm sure my problem is solved somewhere in this post but am having "newbie nerves" about what to do about solving it.
Debate? Sorry but this isn't a debate. It is a help thread. If you read it through, you will find the answers you seek.
So when I try to install I get this message:-
Temporary failure to access the OpenOffice repository.
Please try running GetOpenOffice again a little later.
.............well many times later it still says the same.
OpenOffice is no longer available. Libre Office is used instead.
Having read through some of the replies I "think" my problem might lie with the sources.list file so I have downloaded another copy as instructed but find that this version is smaller in size than the one already installed at /etc/apt so am reluctant to overwrite it.
You need to update your sources list. There is a link at the top of each page for the post about it. The old sources list is no longer applicable here.
I too, as has been commented, have never had any updates.
You can not get updates until you have the current sources list.
Once you are fully updated, you can use LOManager to install Libre Office.