The author has assigned all the "little things" on places to paint the reader's imagination as achingly vivid as possible. All of them are to play their characters accordingly. The Koel, the snail under the rose petals, the grove of the guava trees, the purple bougainvillea, the 'rose walk', the rollicking music of the 40s on Baba's gramophone, the Veranda, and the names go on.
Their harmony and cacophony, the past and the present, and the 'world of twoness' of the story come to the point of "oneness" of the two sisters, Bim and Tara.
For me it was a cozy book with the characters having their own coffers of nervous gothic past that reaches to its acquitted present echoing Eliot's line:
"Time the destroyer is time the preserver"