Unique location and great apartment!
We were two adults and 3 children under 11 and we had enough space. The apartment is nicely decorated and fully equipped, there was everything we needed.
The building situated in the old Belém is 10-15 mins walk from the tram and the Belém monuments, 25 mins from Alfama with the tram.
Our host prepared our arrival sending us all the information and even left us a little welcome gift. Her friend who let us in was also very welcoming.
I would definitely stay there again.