This is the story of a very lonely lady, recently widowed, who moves into a hotel to live. Mrs Palfrey (Joan Plowright), slips into an unusual existance along with the other rather eccentric residents, who are constantly asking her where her relatives are, especially the Grandson, who she often speaks about. On an expedition to the library, she has a nasty fall on the pavement, and is rescued by a young man (Rupert Friend),who takes her into his basement flat for a cup of tea and a rest. They become friends, and fed-up with the constant nagging about her missing Grandson, persuades the young man to impersonate her Grandson as a favour to her, and he agrees. When he comes to her hotel, the old ladies fall over themselves to meet him, and they all find him very charming.
However, her real Grandson arrives at the hotel, a rather ingratiating and spoilt fool,and she knows the game is up. However, they remain firm friends, and then the young man finds himself a new girlfriend. Mrs Palfrey approves of the young lady, and they take her on outings. One day, Mrs Palfrey has a 'funny turn', and is hospitalised. To find out the ending, you will have to see it for yourself!
It's a wonderful, old-fashioned story, and well worth seeing.