Some homes only have one bathroom which can often be a bit of a nightmare for families where many people are getting ready at the same time. There is not necessarily a right place to have a bathroom if you do only have one and some people prefer it to be downstairs where they spend the majority of their time and others prefer to have one upstairs should you need to go to the toilet in the night. If you have young children then you might find it easier to have two toilets in case they need to go quickly or at the same time.
If you do only have one toilet then why not consider installing a second one. Not only may this make things a little more convenient for you but may also add a little bit of value to your home. Many people chose to install a toilet under the stairs, this space is often wasted or is used as a cupboard but can make the perfect downstairs toilet. If space is limited then be sure to check measurements of sinks and toilets before buying. You should also consider which way the door opens as a door that pens outwards will give you more room inside the toilet.