I found the film enjoyable, more so than I expected but I was thinking back to A's comment,

You also might enjoy Resnais' Coeurs. I saw it a couple of days ago and it was the first of his films I disliked, and didn't enjoy over the whole running-time. I thought it wasn't artificial enough and fairly conventional. But most people are quite enthusiastic about it. 

It is fairly conventional but that's purely down to Resnais interpreting and respecting Ayckbourn's original play, that's why I'd say try to forget that it is an Alain Resnais film and just enjoy it for what it is.

Last film chronologically was Mon oncle d'Amrique (1980), though to be honest, I can't remember much about it. 

Cheers Trev.