You can display a number of reviews in a relatively small space, and your visitors can scroll through them. You can choose the number of reviews and the design, and the widget is Rich Results friendly.
The Product Carousel Widget has a number of customisable options. You can change the colour scheme, choose whether to show reviews for specific products or all products, choose to hide the dates on the review, and choose how many reviews are displayed in the widget.
The following options are customisable in code:-