that is one wonderful apartment. Nice and cozy, perfect location, everything you need is just a few minutes away. Ekaterina is very nice and always happy to help with any question.
The only negative comments I have are very small: the boiler is very small and so the hot water run out pretty quick, less than 10 min, which is important to know if you are arriving on a cold, rainy day and have a cold.
the apartment is missing some storage space if you are staying for longer time than a week or two.