Great value for money in a charming neighbourhood with Aromas coffee shop and local markets for produce, dairy, meat, nuts & olives steps from the front door. The #729 bus stops just across from Aromas and runs frequently up and down to the Belem waterfront where you can connect with the Linha da Cascais train via a pedestrian overpass - generally we walked everywhere. This bright apartment has a nice well-equipped kitchen with a combo grill/microwave oven, regular oven, stovetop and full size fridge. A big plus is the front load clothes washing machine in the kitchen - no dryer but we just used hangers and everything dried overnight.
You must be able to manage carrying your bags up the one steep flight of stairs to the apartment - we are both in our 60s and very fit so it was no problem for us.
There are windows facing the street - you can open them for fresh air or shut them as well as the wood shutters at night which completely blocks out any noise. We didn't need the AC but it was great to see the individual controls in bedrooms and living room as temperatures were rising by our final day.
We did find the mattresses in the 2 bedrooms hard by Canadian standards - have suggested cushion type mattress pads would help. The bed in the smaller bedroom is not as long as a regular double bed - be fine for children but I found it short for my 165 cm height so it would not be comfortable for anyone taller. Using the sofabed in the livingroom could be an alternative.
Telmo was very responsive to all our communications and made checking in and out easy.