Does it really come fully assembled?

Yes. The set is sold as a no-assembly product, so the pieces arrive ready to place. You only position them, not build them.

Can the three pieces be used separately?

Yes. Each piece is a separate seat, so you can keep them together as a left-facing sectional or spread them out around the room.

Is the fabric cover removable for washing?

The listing does not say the cover is removable. Treat it as spot-clean only unless the label on the sofa says otherwise.

How firm is the foam seating?

Foam-filled seats like these usually feel firm at first and soften over months. They suit people who prefer support over a deep sink-in feel.

What is a left-facing sectional?

It means the chaise or longer section sits on the left as you face the sofa. Check your room layout before ordering, since the set is built for that orientation.

How does it compare with modular sofas like Lovesac?

It is simpler and less configurable. Lovesac and similar brands offer washable, replaceable covers and add-on modules; this set is a fixed three-piece foam sofa.