Welcome to Rivers and Spires Walk In Baths, Tubs And Soakers. Small bathrooms are not a problem with the right tweaks. In fact, you can get all of those great benefits from taking showers or baths without sacrificing your space in ways that will make it feel more spacious and beautiful! Installation of a bathtub in your small bathroom can be done with creativity and sophistication by using the triangular design that fits into the corner. Walk-in tubs offer a completely comfortable bathing experience that everyone can enjoy.