Martas place is great, it has 2 separate bedrooms and a beautiful private backyard. The space is stylish and spacious for a town center. The location is perfect. Walking distance anywhere and a beautiful park around the corner. Grocery stores, cafes etc. all nearby. This is a beautiful area of the city and is not touristy so you can get a sense of Portuguese lifestyle.
However, the only issue we experiencing was the electricity. We were staying during winter months and had to turn on heaters that were provided. But the building is pretty old and couldn't handle it and we had a constant power outage. We got used to how to cook and heat up the apartment at a separate times but it was still an inconvenience. Marta tried her best to help us out and even got an electrician.
Also, since the apartment is on the first floor you have to be very careful with any food drops or drinks, since insects come in right away. We had a little issue, but Marta provided cleaners multiple times and handled this situation.
I recommend this apartment to anyone who is coming to Lisbon, especially during warmer months as you can't beat the location and a private backyard and a Pool!