Hello Mate,
I was gonna reply yesterday but had to quickly run out.
Right, please remember I am a novice IMO, so pinch of salt!
1: I feel you need more "background blur" to help isolate the subjects.
2: More contrast, more shadows, which will help create mood.
3: Does it have an outdoor area? Try and get some of it to help widen the "context" of the set...
I may be talking a load of tosh,
Gary.