The set itself is cute, and it has some fun details, but the minifig doesn't move the same way that regular Lego people do--specifically, the hands cannot rotate nor can the legs separate. What's more, the only piece of the figure that is interchangeable with regular Lego minifigs is the hair, which was disappointing as my daughter and I were really looking forward to seeing how Olivia would look in a spacesuit or with a pirate hook instead of a left hand.
The blocks themselves can be combined with other Lego sets, so that is a plus. However, creatively mixing and matching the minifig pieces to create new characters is one of the fun things about traditional Lego, and this element is conspicuously lacking in the "Friends" line. Swapping clothes and hairstyles between the "Friends" just isn't the same.