Is this set good for a small patio?

Yes. The sofa is 75 inches long and the chairs are about 25 inches wide, so the full set fits a compact patio or a large balcony. The low table is 39 by 20 inches and works as a coffee table rather than a dining surface.

Can the cushions stay outside in the rain?

The polyester covers resist light moisture but are not waterproof, and the foam holds water once soaked. Bring cushions in during rain or store them in a deck box to prevent mildew and fading.

How much weight does it hold?

The three-seat sofa is rated for 800 lbs and each single chair for 270 lbs. That is generous for aluminum frames of this weight class.

Does it need assembly?

Yes, the frames, legs and table arrive flat and need bolting together. Expect roughly an hour with two people; the aluminum parts are light enough to handle alone.

How does it compare with a wicker or teak set?

It is lighter and cheaper-feeling than resin wicker or teak, but it will not rust and is far easier to move. Wicker and teak look richer and sit heavier in wind, but cost more and need more care.