I birthed at Middlemore in Oct last year, was there 3 days beforehand and back a week later for mastitis, had no problems whatsoever, awesome midwives for the labour and birth, had 3 different ones and each was nice, attentive and made me feel at ease. Food wasnt as good as the birthing unit but was ok and tea/coffee and milo lady came around regular and you are able to make your own too - thats if you are there long enough of course
You dont need to book for the tours, just rock up at 6pm at entrance to the maternity unit