Christina's place is super convenient if you're looking for a practical place near Kings Cross.
It's an older building, so the sound proofing is lacking and you'll hear noise from the busy road outside fairly easily through the night, or even other guests coming in. This made it hard to get a good night of sleep, which I needed after long days at the office.
Communication from host and co-host was excellent and there's also plenty of facilities in the house (fridge, cookware, towels, etc) if you need any of those.
I'd book it again in the future and just use some ear plugs, because the value is excellent.