Highly recommend:
1) Apt is way better in person - there's an outdoor patio and you have access to the rooftop, Nina is also in design so the apt is decorated pretty cute! And the space overall is quite spacious!
2) Nina has hosting down to a tee - she provided us with maps, handy guides for restaurants, shopping, and more - I'm talking about laminated print-out guides with links, screenshots of where they are on a map, and pictures. She also had two cute hipstery/illustrated books describing Norwegian culture. She also gave us some snacks upon over arrival.
3) Location - it's about 10-15 min walk to the Oslo S train station and it's right by the Opera House and Barcode project. It apt building is located among other buildings with restaurants on the bottom floor if you need food. And you can walk over this cool footbridge over a pond to get to the apt - very scenic view of the neighborhood!