Nice experience staying in a "retro" building in the Belem area. You will find many fun items to bring you back in time. Everything you'll need is there and you can even see chicken from the window. Silvia was also very patient to explain everything and helped us out with a late checkout at the very end.
Location is also decent with tram and bus connections, scooters as well as a few supermarkets and playground. Also nice to just walk around Belem to the Torre and Pasteis shop.