Excellent location! It's near the Largo de Garça stop along tram route 28. Near two panoramic viewing points, convenience shops, bakeries, travel card reload points, banks, supermarkets, laundromats and a hilltop bar with a superb view! Literally everything I needed is a short walk from Rui's apartment. It's a really cool neighbourhood. Vila Berta houses are so pretty.
Rui bought us breakfast and made coffee every morning. We had great chats by the window which has a view of Rio Tagus. He showed us his neighbourhood, shortcuts and even sent us to the bus stop when we checked out. Never had such an attentive host before. It was a good experience.
Pro-tip:
1. Plan your day in such a way that you can take tram 28 back to Rui's place AFTER sunset to avoid the horde of tourists who board the tram just for the joyride up the hill. I really don't understand why the tourists do it. I'm sure it upsets the locals.
2. Saga probably makes the best Natas in Graça.
3. If you have problems with your knees, please just take tram 28 down the hill. A trip cost just a bit more than a Pastel de Nata. Don't be a hero. Graça has steep slopes. Oh, and make sure your shoes have good grip.