The first night was a bit rough for us. After a long day of traveling to get to Lisbon, we were exhausted and went to bed early just after 9:00 pm only to be awaken by other apartments’ guests to came back later and didn’t care to keep their voice down close to and past midnight. Some of them were actually shouting and swearing loudly. They quieted down after 1:00 am. We could also hear the guests above us walking around in their apartment, taking a shower, or flushing the toilet. For the rest of our stay, we went to bed closer to midnight and all seemed better. I put on my earplugs and was able to sleep.
Aside from that, the location is unbeatable: right in the center of Lisbon, walkable to many restaurants and subway. We didn’t care to cook during our four nights’ stay but the kitchen is well stocked and we enjoyed the spacious apartment. Washing machine doesn’t have dryer so you will have to hang your clothes indoors to dry. Overall we feel this is a good choice for first time traveler to Lisbon. A bit too touristy but being able to walk everywhere is a plus. It feels also very safe with lots of people and police presence late after dark.