My sisters and I stayed in Isabel's apartment for 3 nights. We were very impressed with the apartment which is on a charming, small street in Lisbon just off from the more busier streets nearby. It was decorated very well and clean and had everything we needed. It was close to restaurants, shops and bars.
Isabel was very helpful with things such as taxis, information on local amenities etc.
We would recommend staying in Isabel's apartment. :)