Everything about this place was great. The apartment is spacious, neatly furnished, and has everything one might need. There's a public transport stop right next to the door, so you can enjoy a tram ride to the city centre.
The area (Ajuda) is very calm, so you can have a nice rest from the buzzing city centre, but everything's still nearby. There are a lot of attractions a short walk away (Belém Tower, Jerónimos Monastery, Museu Berardo, and much more), and you can also enjoy a nice stroll along the river. I'd also recommend visiting the Ajuda Botanical Garden that's right around the corner from the apartment.
We really enjoyed our stay here and the communication with the host was spot on. I'd definitely recommend other travellers to stay here while in Lisbon.