It’s a nice, tiny apartment - if you wanna be in the centre of Lisbon reaching everything by foot it’s perfect. You shouldn’t be too sensitive with noise or heat (In summer).
The bathroom is really small - but hey, you can brush your teeth while sitting on the toilet...unfortunately we didn’t have stable wifi, so I wouldn’t recommend this place if you have to work (as we tried) as a freelancer. For a holiday stay it’s a nice place.