A few more counterpoints:
It is (unfortunately) common for the amenities planned for a building to change during construction. It's a risk of buying early; trust me, I've been a little burnt.
A "showroom" is hardly a necessity: it wouldn't display any of the floorplans or serve as an indicator of build quality, it'd just be a fancy upgrade catalog. It is troublesome they aren't designating a display; I expect they will end up with one unless they sell out prior to completing construction.
There is no sense to condo fees until the building has been resident-managed for a year. Until then, everything is based on the "best guess" of the developer (who has incentive to lowball).
It sounds like the base finish levels will be quite nice here, and the building itself looks to be a gem.
I also don't believe the "heart" is going to be up or down Wash Ave... it
is Wash Ave, with slightly different character from east to west.
Disclaimer: I bought mine loft 3 years ago, so I want all these new units to be as expensive as possible
