We adored our stay. We stayed as a family (two adults, two kids) and believe the location could not be better.
You are right next to Enge train station (as others noted, direct trains to the airport), as well as a number of trams, including the tram to the Zoo. You are also close to the lake and like a 10 minute walk from the main ferry terminal.
We found a great playground walking distance next to Engitreff Cafe. There are reasonable convenience stores at thetrain station and surrounds. We also took a really short tram to Sihlcity shopping centre.
The apartment itself is beautiful, with spacious rooms and a great kitchen.