Rome Adventure is an Italian travelogue/romantic melodrama starring Suzanne Pleshette as a librarian who resigns from a school board after defending a book and takes a trip to Italy to find the meaning of love.
This is from Delmer Daves' later period when he engaged in fine-looking, middle-class melodramas such as Parrish, Youngblood Hawke and Spencer's Mountain, which were often adaptations of novels.
As a travelogue it fits in with other productions of the period such as Summertime, Light in the Piazza and The Roman Spring of Mrs. Stone in which (middle and upper-class) women who tend to be outsiders find love in Italy that has evaded them elsewhere due to age (Summertime, The Roman Spring of Mrs. Stone), disability (Light in the Piazza) or independent streak (Rome Adventure).
Visually, it is lovely to look at, but it does feel rather hollow. Pleshette is good, so is Brazzi.