I have no experience with any of West Elm's upholstery but they are not on my radar as a quality furniture maker. That could mean you'll likely be shopping for another sofa in a few years (or less) if it gets heavy daily use.

The seat support is sinuous springs - which isn't bad, but won't last like 8-way hand tied. It's better than web support, though. The frame is pine and engineered wood with "reinforced" joinery. Quality frames are kiln-dried hard wood and the joints are glued, screwed and doweled. It looks like you have to attach the legs yourself. The legs on quality furniture are part of the frame.

The cushions looks suspect, too. I can see them losing their shape quite quickly with heavy daily use. I'd put this sofa on the back burner for now and do some research on quality sofa construction, then shop around until you find the absolute best for what you can reasonably afford.

A few furniture makers with decent to great reputations for quality are: Lee Industries (Crate and Barrel carries some of their line), Lexington, Wesley Hall, Taylor King, Huntington House, Hickory Chair, Hickory White, Baker, Hancock and Moore.

A few resources to get you started with your research:

[Furniture 101: Q &A[(https://www.houzz.com/discussions/furniture-101-qanda-dsvw-vd~2371246)

[Middle to High End Upholstery[(https://www.houzz.com/discussions/middle-to-high-end-upholstery-dsvw-vd~2371843)

Hope this helps.

Did you end up with the Haven? What do you think of the quality?

Did you?