Recently stayed at Boris' with my family (including kids).
Location was great, only a quick walk to South Yarra station, only two train stops away from Flinders St. Super convenient and really well priced.
Accommodation has everything you need with a bonus rainfall shower head - bliss.
This was our second stay in Melbourne but first with Boris. I wouldn't hesitate staying there again or recommending to friends and family.
Thanks for having us - we had a great time!