If you apartment is not new or several years old, best to get the wiring checked by a local sparks.
It is unlikely with new builds, but with older properties there have been cases where builders skimped on electrics, using what a Portuguese electrician friend calls "Electro-Pedreiros", or labourers masquerading as electricians.
I, myself, in the past have refused to install desktop computers down here after arriving at properties and finding the electrical system unearthed.
If it is a new build, should be OK as Portuguese Safety Regs are now much much tighter.
