We stayed for a month. It was a really good value for a stay in a residential neighborhood. The spacious property has windows in all four directions and gets lots of sunshine and breeze, nice gifts for summer.
There are grocery stores, markets, restaurants, gardens and the popular Amoreiras Shopping Center all within walking distance. The public transportation is impressively convenient so that the buses will connect you to other transportations to easily access different parts of Lisbon.
The host Gile was very responsive and knowledgeable. We obtained much information that helped us explore the city. Although Gile was out of town upon our check-in, he arranged someone to be there to greet us. In addition, Gile was very accommodating regarding the check-in and check-out time so that we could have more flexibility.
Some aspects to be aware: 1) The property is located on a 2nd floor (3rd floor from a US perspective) without an elevator. Therefore, be prepared to take heavy luggages up using stairs if applicable. 2) Campo de Ourique is on airplane landing/takeoff route so that there will be fairly frequent airplane passing by. Therefore, be prepared if you are noise sensitive.
Overall this was a good stay with excellent value. The host was great!