My wife and I stayed 3 nights at Libby's place during our Wellington getaway. First and foremost the location is fantastic. It's very central and within walking distance of anything you need.
Security is also excellent, with reception staff and swipe key entry through 2 sets of doors through the main entrance.
The apartment itself is clean, tidy and well stocked with essentials. It catches a lot of sun in the afternoon. It's close to the motorway but the noise isn't excessive and no vibrations were felt at any time during our stay. Light sleepers may wish to bring earplugs.
The wifi is fast and I experienced no buffering while streaming HD.
We would certainly consider Libby's place the next time we are in Wellington and recommend it to anyone who is visiting.