The starkness of the neoclassical façade contrasts with the decoration of the interior, evoking the daily life of a wealthy house of the nineteenth century.
The gate to the entrance leads to a spacious lobby floor, where there is installed a mail-coach made in Paris in the late nineteenth century. The hall is dominated by a portrait of Reina Isabel II attributed to Luis de Madrazo Künst (c. 1862 - 1863). The various rooms are dedicated to what was the daily life of the family, dining room, music room, dance hall, cloakroom and alcoves, chapel and game room, lined with furniture of that period. Worth noting at the sets of drawers and a chair for children dating from mid-nineteenth century; among musical instruments, a harp made by Erard Frères during the first quarter of the nineteenth century and a Viennese fortepiano from 1810 built by Johan Schantz. The tasteful decoration displays precious objects such as Saxon porcelain desktop clock made in Paris (1849) and several sculptures, among which works by Lambert Escaler and Josep Reynés, and also fans, Murano glass and Bohemia crystal. The rooms allow us to observe the evolution of domestic lighting systems, from oil lamps to gas light, as well as some details of health conditions.
El Celler de Can Llopis (Can Llopis Wine Cellar), now smaller, was one of the great wine cellars that produced wines, mainly Malvasia wine that was kept in bottles and kegs waiting marketing. Located on a lower ground floor, is one of the most interesting rooms of the museum. Manuel Llopis de Casada bequeathed all the lands planted with Malvasia vines to the Hospital de Sant Joan de Sitges so they could continue cultivation, production and quality, they were in charge from that moment and currently sells four varieties of Malvasia wines. The descendants of testamentary executors of Can Llopis receive each year a certain number of bottles of Malvasia corresponding to the annual harvest to witness the continuation of legacy.
The gallery on the first floor and the romantic garden are two of the most attractive areas of the house. The wall paintings at the gallery evoke children, and at the pavement there is a game of "vis-a-vis", with 49 polychrome tiles that was the pastime for the Llopis family and their guests.
The romantic garden retains the intimate air which corresponds to a space devoted to family leisure. It has communication with the winery and has a porch with an interesting mural. The garden of Can Llopis is one of the emblematic areas of the series of concerts that take place during the summer cultural program of Museums of Sitges, the "Sitgestiu Cultural" that has been held during almost two decades in the summer.