This is partially why VGF is my favorite. I can easily walk to Poly from the original villa building or Big Pine Key and grab a drink or snack or head to an ADR while staying at VGF.
I am actually the opposite. I would much prefer the Island Tower to the
DVC longhouses.
The longhouses have some of the largest studios on property, but I have stayed in them and I do not really like them. I think the bathroom setup, especially the bathroom with the tub is a waste of space. The rooms are also so, so, so dark to the point I needed to leave my TV on at night as a source of light.
This may also be strange, but I like the side of Poly where Island Tower resides more than the side closer to TTC. It's more compact and walking past the marina, especially at night is very nice. It's also close to GF and if I am staying at Poly I like visiting.
Just personal preference so definitely stay at both and see which you prefer!