We had a lovely time at Simen and Guro's! It's a very comfortable, bright, open and nicely furnished apartment (the both of them obviously have great taste) right in the middle of Oslo, basically in walking distance to all the places you may want to see. We had our bikes with us which made reaching places even easier, but there is also a bus stop right outside the building and Simen provides the current timetables and routes on his iPad in the kitchen (really good idea, by the way!). The area is pretty quiet, as well as the building itself, you merely hear the bus stopping out in front.
The apartment makes it easy for you to feel right at home - the spacious and well equipped kitchen is ideal for preparing meals, we spent hours sitting at the big dining table in the living room, and had our breakfast in the sun on the small shared balcony right outside the entrance. We didn't get to use the big terrace shared with the neighbors (the weather gods weren't with us) but it looked very inviting. The small supermarket right next to the building is really convenient, too.
Simen and Guro are very helpful and welcoming hosts, even though we booked at quite short notice, communication was super easy and Simen even managed to arrange a parking spot for us. Check-in and -out was uncomplicated as well. Thank you guys for a great time, we sure would love to come back!
(Also, we loved the Bluetooth speakers and the light remote - choosing the color of light had a really nice touch!)