I would like to highly recommend Isabel's place. The location is just on the right spot, totally walkable everywhere, and also has 2 metro stations 6-8min walk, and any buses you wish to go up and down, including bus and metro options to the airport. My mom and I spent 1 whole month in the flat. We had access to towels, comfortable bed, all appliances in the kitchen to use. There is a shopping centre 1 block away and Mercado Bom Sucesso with 10+ restaurant options and take away. The building is mostly business offices in it, so it is quiet, not much people movement. We felt very safe. The app system to get in was very good (you must have internet to manage your way in the building\flat). All our questions and requests were immediately taken care of. Thank you Isabel and your team, we had an amazing experience and stay.