We stayed at Ingrid's apartment for three nights while visiting Oslo. The check in was easy - we picked up the keys from a secure lock box close to the apartment. Communication about check out was easy and efficient. The apartment is on the third floor and there is a lift too. The location is great - close to two bus stops to and from the airport. There is a french bakery and a small shop that sells some food and supplies, 2 minutes walk from the apartment.
The apartment was lovely and clean and had plenty of space for two of us. There is a cute balcony with seats, and all amenities you could need. We would definitely stay here again if we visit Oslo again.