Stylish and well-located, this is probably a great spot for a short (3-5 day) stay. We stayed quite a bit longer than that, and it wasn't well suited for us.
The decor is charming but all the seating, with the exception of one chair, is uncomfortable. The bed is pretty good; we spent most of our time sitting there.
The kitchen has basics but is chaotic and not especially clean in the details - as a result, we made only toast in the almost 3 weeks we were there.
Many windows are painted shut, which made it hard to get good air flow. The kitchen cupboards, like all closets in the house, have a damp, musty smell that I understand is not uncommon in Wellington. We did not use them, preferring to store food on the counter and leave our clothes in our suitcases.
The location is good - a short (though hilly) walk to lots of interesting things.
Some people talk about noise. The sound of the bus outside did not bother us (it is at the front of the house, away from the bedrooms) and the neighbours were quite quiet when we were there, though there does appear to be a high turnover Airbnb upstairs.
All in all I would describe the vibe of this place as "elevated student," and obviously, from other reviews, many people love it. It just wasn't for us.