Great apartment! Was very clean and well-kept. Has everything you could need for your stay. Apartment is in an awesome location close to the water, trains, timeout market, great restaurants and more. If you like to walk you can reach almost everything there is to see in Lisbon from this location (with some uphill walking included but that's expected in Lisbon).
Team that manages the apartment is great and friendly. They communicate very well and are willing to answer any questions. The air conditioning stopped working a week before we arrived but they made sure to immediately reach out to let me know and offered to either refund the full price if I wanted to find somewhere else or gave a night and a half off if we wished to still use it. The apartment itself ended up being cool and out of the sun anyway where the air conditioning wasn't even needed. Appreciated being told right away about the issue before we showed up anyway.
Would stay in this apartment 10 times out of 10 in Lisbon.