The flat is around 15 minutes walking distance to the city center (or 3 stops by tram which is 100m away). Two cheap supermarkets are around the corner. The flat itself (and especially the kitchen) is big and fully-equipped, so that cooking there and sitting with four persons was no problem at all. Alex is really friendly, but we only met him at the end unfortunately. We can really recommend this place for a cheap stay in Oslo!