there were four adults on our trip, and this apartment is fine for a couple of days, but we'd struggle for any longer than that.
The living room contains a sofa bed and a double bed with really only one separate bedroom, so it should be fine if you have a couple of small children perhaps, but for four adults it was quite cramped.
The biggest issues for me was no oven, as I like to cook when we're away, (although there is a microwave and a plug in hot plate) and the Wi-Fi was really non-existent.
The location is great though, really convenient for rail and bus/trams and there are plenty of restaurants to choose from within easy walking distance.
Overall I'd recommend it for either a couple, or for short breaks for families with smaller children.