In a quiet, pleasant neighbourhood, this warm B&B offers one of the best deals in Oslo. The building dates from 1890 and many of the original features (high ceilings, rose designs) remain. Though some of the fittings and furnishings are a bit tired, rooms are bright and have fridges and kettles. There's a small garden to lounge in on sunny days.
It's very popular, so book ahead. A spartan breakfast is 95kr.