Thank you all for the advice and help,it has been great and stopped me from thinking we would be sleeping on the beach for the first night!
Basically when we booked, the description was 'a four roomed and two bathroom apartment' (which with 3 teenagers aged 19,19, and17)we welcomed, as showering seems to go on in this house most of the day! We have now had a phone call after Eggy went to see Stella and also booking.com rang her and she has said that we have the same apartment but with one bathroom less! Quite where its gone I couldn't work out,but at least we still have a holiday.
Now feeling excited again to finally see Arrilas and try some of these lovely places to have dinner! Once again thank you all especially Eggy who really worked hard on our behalf,Thanks ... Claire