Does the Toject Piece set really need no assembly?

Yes. The set is sold as ready-to-use pieces, so the sofa and chair do not need to be built or have legs attached. You still need to position and connect the modules yourself.

Can the three pieces be used separately?

Yes. The set is modular, so the three-seat sofa and the single chair can sit together as one arrangement or be split into different rooms.

Is the white fabric easy to clean?

The covers are fabric and the listing does not state that they are removable or machine washable. Treat spills quickly with a fabric cleaner, and expect light marks to show on white.

How many people does it seat?

It seats four in total: three on the sofa and one in the chair. That suits a small living room or a couple who want extra seating for guests.

Will the foam cushions hold their shape?

Foam cushions are comfortable at first but typically soften sooner than spring-based seats. Rotate and fluff the cushions regularly to keep them even.