Isa's place was clean and welcoming, and had all the supplies you'd need for every room (extra towels and soaps for the bathroom, plenty of dishes for the kitchen, all the cleaning and laundry supplies you'd need). And there wasn't a single glitch in the internet connection.
I was traveling solo so I didn't have to worry about roommates, but the apartment was laid out nicely so that the living room and bedroom were at opposite ends of the place, so if you were sharing with someone you could still have privacy and quiet.
The bed was my favorite part of the experience - it was big and comfy and I slept better than I had in quite some time. While the place is only two long blocks from one of the major tourist areas in the neighborhood, I never was interrupted by street noise (and there was a 2-week long festival going on while I was there).
I would advise any future visitors to be a little more conservative than I was in measuring out the laundry detergent - I definitely poured too much (I was trying to get all the cigarette smoke out of my clothes because people smoke a lot in Portugal!) and now I'm still doing rinse cycles to get the detergent scent out of my clothes. Perhaps my only advice would be for the hosts to get scent-free detergent.
Unfortunately I became sick near the end of my stay and had to leave two days earlier than planned. Isa was supportive and offered me a reasonable adjustment to my remaining fee.
If I were to stay in Graca again, I would definitely return to this apartment and/or would look for a place in one of Isa's other buildings.