This is a lovely apartment with an neat, old-fashioned vibe in the Old Town part of Stockholm. The space seems to be managed by a third party company rather than an individual directly, so it was not surprising to us that communication was fast and detailed. This also meant that the place felt a little less personal as compared to some other AirBnbs at which we have stayed (no personal recommendations for the area or a sense of the apartment being lived in, for example), but this was largely fine for our single night stay. We were four people (two couples) and we fit comfortably on the double bed and sleeper sofa.
There were a few things which made our stay less than ideal, including lackluster towels/sheets, a slightly dirty bathroom, and a party next door which kept us up past 3am (we were there on a Saturday night, so perhaps this is something to look out for on the weekends).
This is by no means a bad place to stay and I would definitely recommend it to a friend if only for the coziness of waking up in Gamla Stan to walk the narrow streets before the rest of the tourists have flooded in! Thanks to the hosts!