The location is near the city center and you walk about 15 minutes to the train station rossio which is more or less the starting point for a lot of touristic activities. So a very good point to start various adventures.
In our opinion the apartement lacks of detail (some examples: no functioning lighter to use the gasoline oven; there weren't any tools to clean up the kitchen after cooking, besides a quite disgusting towel to wash the dishes; the doors for the rooms where closed with a really small padlock; there were no installments to hang the towels in the room after showering; only one small table with 4 stools for an apartement with 5 rooms, each of which can be booked by a minimum of 2 people; not enough dishes and the pans& pots in a really bad shape.)
Because of the many people in one apartement with only one bathroom (and the toilet in the bathroom) there are quite long waiting times in the morning/evening to use it. That was in our opinion the most annoying aspect.
If the hosts start to put a little heart into the practical detail, we would recommend staying there. Right now, it is alright if you need a place only for a few nights and plan on spending your daytime elsewhere and don't plan to cook at home.