This was exactly as described. The location was exactly where we wanted to be, and the double glazing window was remarkably effective at cutting out the noise from the square. A greater problem was noise from neighbours at times.
We had no problem with the stairs, although we did see a couple having to pause part way up, if you aren't fit and healthy maybe look elsewhere.
The flat was clean. The beds were like camp beds, and only a single pillow my sleep improved once I took a cushion from one of the living room chairs.
It was good to have a dishcloth and washing up liquid. The kitchen was perfectly adequate for a city break.
Our flight was delayed coming in, which was a problem, as check out finishes at 8. They arranged for a key to be left elsewhere, but it was 20 minute walk away, and the key wasn't available until 9; we arrived at 815. It was awkward with luggage and children. The communication was good at least.