This apartment in Gamla Stan was fantastic! The location is so central and we could walk everywhere. The Skepsbron Bageri a few steps away was a favorite morning coffee / bulle place. The Coop grocery store nearby in Jarntorget was also very useful and convenient. Even though we were in the middle of town it was quite most of the time - only on Fri/Sat nights was there the occasional (rare) noise from outside. Mind you we were here in off-season (fall).
The space itself was quite large for my wife and 2.5 year old. We appreciated very much the attention to children with this apartment - a BabyBjorn Pack'n'Play and a big box full of toys! He loved it too and felt very safe and at home. He easily managed the two sets of steps up.
The beds were comfortable. The bathroom was also clean and the bathtub useful for the toddler. It was great to have access to a good washing machine and dryer.
My only disappointment was the coffee machine. I'm quite particular about my coffee and was happy to see a Nespresso (and capsules) noted in the description. In the picture even a milk frother is apparent. I even asked the host about capsules before we left home and was told there would be some there (or that we could buy them). However, when we got to the unit there was no Nespresso. Instead there was a large Jura. It was dirty (indicated needed cleaning) and there were no beans. It's a nice machine (with a frother) but no attachment for the frother so not useful for that. When I asked about it I was told (again) that I could buy my own beans or use the drip coffee machine. So I was disappointed. Fortunately, lots of great coffee within steps of the apartment!
Overall though we had an excellent stay and would highly recommend this place for couples or families!