Wonderful stay! Very spacious and well equipped. The hosts were very responsive and quick to help us with any issues. Not clear from the listing, but there is actual both A/C and heat (pleasant surprise for the chilly fall nights).
One tip for those traveling with children - while there is an elevator, our stroller was too wide to fit inside of it, which meant we had to disassemble it every time we went up and down. Definitely bring a small travel or umbrella stroller (which probably applies to a lot of Lisbon).