It is a one room apartment set in beautiful grounds from which you can see the gardens and hear the birds.
Location-wise its really the best of both worlds - 10 mins walk to beach and train station (30 mins to Lisbon) but set in a pretty, quiet, leafy neighbourhood. Its a 20 min stroll along a gorgeous promenade to Cascais, from there you can visit Sintra.
Mini market round the corner. Nice big pool which my children enjoyed and other sporty facilites too.
I stayed with my two young teenage sons, it was spacious enough - as long as you are ok to share the same room.
Would definately visit again!