We stayed for 4 nights in this beautiful accommodation on the edge of Gamla Stan. The location is outstanding, all important points in the city are within walking distance and, if it rains, the subway is right around the corner.
The view from the apartment is wonderful, the bed is soft and comfortable. You will find everything you need in the apartment, the kitchen is also well equipped.
As we were there in December the only challenge was keeping the apartment warm with -15 degrees outside as the windows weren't perfectly isolated. But since the heaters work well, that wasn't a problem.
We arrived and departed outside of the office's opening hours, but the keys were handed over without any problems. Communication with Gustavia was always fast and super friendly.
When we come back to Stockholm, hopefully soon, we will definitely see if the apartment is free again.