We highly recommend Residenza Viani. It's charming, extremely well located, well managed and comfortable, and our service was excellent.
We landed in Pisa and after a very short stay, traveled to La Spezia. Whereas Pisa was rather ugly based on our brief stay, La Spezia was beautiful and full of character. Residenza Viani is located in the older part of town, about a 20 minute walk from the train station, but down what seems to be the commercial heart of La Spezia. My partner spent our first trip down pausing frequently to window shop. Residenza Viani itself is located across the street from a charming park and within a short walking distance of the harbour and pier, where we took several walks.