I'm addicted. I actually signed up for Yelp specifically so I could post a review. I've been to Waffallonia like seven times in the last few days and every time I get something different. It's awesome. The dough is sweet and chewy - the waffles have more of the consistency of thick, slightly-crispy croissants than of American waffles.
TRY THE SPECULOOS. It tastes like graham crackers and spices turned into a spread, like nutella or peanut butter-- it's truly awesome.
The only complaint I could have is that the service isn't great about half the time. A couple of servers have put their hands all over my waffle when preparing it (ew) and the plastic cutlery just seems cheap and shoddy (not to mention it's really hard to cut your waffle when you're using plastic knives). I've also seen a server picking a hair out of the waffle batter before. Gross.
Other than that, highly recommend this place to anyone and I'm definitely a hooked customer! I wish they were open for breakfast!