Tristars
The good old L1011 was indeed a pleasure to work on - when it wasn't tech in it's latter years.
The -50 and -100 versions that I worked on at Caledonian had forward, mid, aft and underfloor (UFG) galleys.
They had five toilets at the very rear of the aircraft (commonly refered to as "Penny Lane", as mentioned by Jade) and either two or three toilets at the front of the aircraft.
I certainly enjoyed many good years and trips on board the Tristars. I did have a few nightmares too, but those memories are definitely outweighed by the good times.