  In this note we study type II superstring theory on the direct product of
AdS3, the squashed three-sphere and a four-torus (AdS3 \times SqS3 \times T4).
We derive explicitly the Green-Schwarz action and discuss in detail the hidden
integrable structure corresponding to local and non-local currents. We find
that the model is classically integrable and that the currents generate a full
psu(1, 1|2) superalgebra, even though the corresponding spacetime isometries
are broken by the squashing.
