Lo que dicen los Houzzers:
A close-coupled, back-to-wall toilet, where the cistern and pan sit flush – excuse the pun – against the wall, can be a good, more affordable compromise. You may also consider an integrated toilet with a washing basin on top. This is a great option if you’re looking to reduce water usage and become environmentally friendlier. It could be just what you need; a basin where the wastewater from washing your hands runs into the cistern for the next flush, and you save space because you don’t need a separate sink.