I showed this house last year.
Here is the CMLS link: http://matrix.ct-mls.com/DE.asp?ID=181378904
There is a great room at the center of the house but no formal living room or family room. They use the porch at the back of the house as their fair weather family room (see Pix 12). The master is on the main floor. There are 2 bedrooms upstairs and a separate studio area that has a bath (see Pix 11). This could be the au pair area.
The yard is lovely but the koi pond takes up a lot of room.
Hope this was helpful.