as paddywak says, it is not necessarily the size of the house, you need a decent size garden, ie: something bigger than a postage stamp, and to be prepared to keep the dog mentally stimulated and exercised, otherwise the dog will get bored and this could result in aggressive behaviour or the dog destroying your house.
A friend of mine had one many years ago, then another to keep it company, same scenario, always wanted one since a child, and unfortunately although they took them a walk, albeit only once a day as they were at work, the dogs absolutely wrecked the garden, and the house, one tore apart a chair in the lounge. Because the dogs were not getting enough exercise they were very very boistrous in the house, and after running around the mud pie they turned the garden into, they would come in the house do the same there and the walls turned from magnolia to black. Nice dogs with the right owners.