There's isn't anything bad I could say about the NashOTEL.
I loved the beds and the bedding, very soft. The shower was very, very roomy and wonderful. The staff is super helpful and friendly. The receptionist Olga really went out of her way to make our stay as wonderful as can be.
The breakfast buffet was excellent, lots of things to choose from.
It's not noisy at all, in the hotel nor on the street, which makes for a very peaceful night.
I would definitely go to this hotel again if I were to go to St. Petersburg again.