My girlfriend and I stayed for two nights and Tom was a super friendly host and super fast in his responses. He took into account our wish to keep the (calm and very cute) cat out of our room and gave us some advice around the city.
He pointed out himself that Norwegian apartments are not really made for 30°C and we noticed that the bed room was heating up very easily as we were lucky enough to have some very hot summer days in Oslo. However, nothing that the fan and open window couldn't solve.
Would recommend this place any time!