My girlfriend and I stayed with Jim and Ian for over a week and it was great! The room was very nice and the owners don't watch over you like hawks :) so you can really feel relaxed.
Location is a bit from the centre but the public transport is very close by and runs pretty frequent. Jim and Ian are great and really make you feel welcome. I trully recommend the stay to anyone looking for a nice and comfortable stay in Wellington.
We would definitely return to Jim again.