The building in which the apartment is located is very well accessible by public transport. The Amsterdam Lelylaan train station is a few minutes' walk, and there are several city buses within walking distance of the square.
For a peaceful walk, you could enter the Rembrandt Park.
The chic area Amsterdam South is located in about ten minutes by bike. Here are many boutiqueshops and a wide variety of catering facilities. From here, you can also enter Amsterdam Vondelpark.