Sally R.
Yelp
I LOVE Maisy's. The 24 hour factor is the major drawcard for many, although I have to admit I've never actually been later than around 10pm. For those who poo-poo such places because they attract drunks at 2am, the 24 hour (on weekends) Cremourne McDonald's, located about 200 metres away, is probably more of a drawcard than the cute, character-filled Maisy's.
Maisy's Cafe is a good choice no matter what time of day or night you choose to visit - it has yummy food (I recommend the wedges), pretty ok coffee and good vibes; it's a nice place to catch up with friends, see an old aquaintence, or sit by yourself and read a magazine. It's a tad expensive, but the central location is probably the cause of that. Speaking of central location, a word to the wise - don't try and park on Military Road, you'll get stuck going down the Warringah freeway if you can't hang a park in time; a better bet is to park in the council carpark behind. Hang a sweet park (or arrive on an extremely frequent bus), grab some wedges and hang upstairs with the cool kids.