We stayed at the apartment for 6 nights, and I think I would describe my stay as effectively comfortable.
The communication right from the booking, to check-in until check out was easy and smooth. We had a small issue at the apartment on our first day and Maria was very easy to reach on her cell phone and responded to our concern immediately.
Check in was super easy too- the hostess gave us a handy tip about the train station we arrived at and great local tips on the sights and sounds of Lisbon, once we were checked in.
However- all of Alfama is super up and downhill and we were not prepared for the seriously uphill trek with our heavy bags! It was more than a workout. But thank you to the hostess for helping us with a bag!
The Apartment itself was cute, colourful, clean and brightly lit. Everything we needed immediately was available- 2 towels and hand towels/ 2 coffee capsules and 2 sugars/ basic toiletries and an extra blanket. I do think thought that we could've used some extras to replenish (like coffee or toiletries), since we were staying a week. However, Maria did tell me we could text her to bring over fresh towels/sheets, which we didn't end up doing because we had our own.
Inspite of being warned ahead of the low ceiling- I don't think we were prepared for the compactness of the apartment itself. Everything is sub-sized and slightly tinier than normal. It took a little getting used to. The sink and shower area however are exceptionally tiny. And inspite of not being very large people, my boyfriend struggled with fitting into the shower cubicle, and I nastily bumped my head (a LOT) on the super low ledge over the sink. The two things we didn't get used to, throughout the stay.
The apartment can get noisy- the neighbours next door and upstairs + sounds from the street + everyone who enters and exits the building- you can hear everything, all the time. But I suppose that's an Alfama charm.
Which brings me to the BIGGEST plus- the location. The location is fabulous. In fact, on one of our walking tours, the tour guide got us right into the lane of the apartment and pointed it out to be a part of historic value in Alfama.
I would stay here again, this time a little better prepared- but primarily for it's location!