We stayed in Maia's apartment for family reunion for 4 nights. It takes about 30 minutes from the airport to the place by train and bus, and the bus stop is just around the corner. The apartment is bigger then it seems in the photos, we were 5 adults and there was enough space for a comfortable stay.
The location is not central, but Copenhagen is not a big city either, so we could make our way to the centre by foot, it take about 1 hour, but we were enjoying it as there are a lot of nice cafes, bakeries and parks on the way.
We were travelling with a toddler of 1 year and 8 months and thats a perfect place to stay: plenty of toys from Maia's daughter, so our girl was busy all the time) And there are very nice playgrounds and parks for children in 20 min walking distance around the place.
The place is recently renovated, so there is no cigarette smell at all as mentioned in the previous comment.
There are several supermarkets in 5 minutes walk from the place. Kitchen is equipped with everything needed for cooking and a Nespresso coffee machine.
Neighbourhood is very quite, you don't hear any noises by night.
Highly recommended especially when travelling with children!