The apartment is super cute and has everything you need for a short stay in Lisbon! We liked the experience of sleeping in a loft bed :)
BUT you should consider that this apartment is definetely in the CENTRE of the city which means that you sleep in the middle of Lisbon but also that it might get very noisy during nights. Plus, the restaurants located in the streets produce a strong smell (smoky, a bit fishy). You should leave the windows closed but then it gets very hot inside although there is a fan. Do not forget plugs when booking this apartment! :-)