We stayed in the apartment roughly two weeks.
The location is great. There's a bus & tram stop in front of the building. You will hear some background traffic in the bedrooms, but overall I'd say it is a very quiet apartment with many options around to eat out. Both of us were working and the internet connection was great. For the sake of correctness, we had a problem with the internet randomly dropping on one day towards the end of the stay, but Sarah helped to sort those things out with Internet provider.
If you are planning on cooking a lot, please check if the dishwasher is available. It was not there during our stay and previous comments mentioned that it was missing as well. It wasn't a problem for us though.
In short, we definitely recommend this place with a nice view to the river from the living room and the palace view from the bedrooms. Sarah was a great host, she gave us some recommendations and tips and was very responsive in case we needed anything.