This place is exactly what you need if you are a solo traveler. This apartment is sparkling clean, with all the needed amenities. There is just enough space for one person to enjoy the stay and rest well. The house is really conveniently located less than 150 meters away from Santa Apolonia station that will get you started on going almost anywhere you need to go in Lisbon. There are restaurants literally next door to this place and a beautiful view of the Tagus river (a little obstructed by nearby buildings).
Ana personally met me at the apartment a couple of hours before the posted check in time. I had a tour to go on at 3pm, so Ana was kind enough to find time to meet me at 1pm. There were plenty of good towels and good-quality toilet paper. The apartment is set up nicely for a traveler to really enjoy their rest between days of exploration. The bed and pillows were super comfortable, the blanket so perfectly warm. I slept like a baby in that bed.
The neighbor upstairs is noisy when coming up and down the stairs, plus she/he likes to smoke, and the smoke gets into the apartment, so that's something to keep in mind, if that is important to you. But despite that, I wholeheartedly recommend this apartment.