In a huge number of countries it is perfectly legit to install a play 1 in a bathroom uk wiring regs make it difficult for two reasons firstly it isn't ip rated which means it can only be installed in the area classed as outside the zones of a bathroom which a large number of uk bathrooms don't have as they are not big enough similarly power is tricky as we don't alllow socket outlets in any of the zones meaning most people need to supply power from outside the bathroom.Really? Didn't know that.
Interestingly if you have a cupboard in your bathroom you can install a sonos inside it as the wiring regs treat this as a different room hence boilers biting allowed in bathrooms. Interestingly the same also applies to the space under a Bath if you have a fixed bath panel.