Not having been aboard and Attalia, but my Arcadia is 2' shorter, same vintage etc.
Some things to look for.....
Foam backed vinyl hull lining may be rotted. WHile a doable fix, not fun. I can get you a link to the repair
on the Jeanneau-owners site. Which by the way has over 4000 owners listed for all sizes shapes and forms of the boat.
They can be initially tender, but do harden up to a degree. You may have to reef earlier than you did with your current boat. You will want the mast pretty upright, do not lean it back, or you will get some weather helm, or at least mine is that way! I have a Castro desing, vs the attalia being a Joubert et Nivelt design. Can not say I have heard a lot about him, but Jeanneau used many designers in the 80's. They did not use a single designers as they seem to do today.
Wood work is as good as any from that time frame. Easy to work on, varnish
etc. Not all solid per say, but teak plywood for the most part, with solid wood along edges etc.
One can still get the factory rigging
etc. But I have a feeling most of us have done as I have, replaced the std Goiot gear with Harken
/lewmar etc that is easier to find and buy.
I have not heard of any blister issues from jeanneau boats in general from that time period either.
There will not be hot and cold water IIRC, nor is there a shower on board.
Here is a dutch? site with a link to a owners manual and design specs. I can not find a brochure even at the main jeanneau site.