This was a fabulous stay in a very well-appointed flat. The only reason I am giving 4 stars vs 5 is that the extra step to get the key at the office and then get to the flat is a lot after a day of travel. Now that we know Lisbon better, it will be much easier, but for first-time visitors it added complexity.
The flat was ideal with two beds and two baths. The beds were very hard - not especially comfortable - though. And the one sofa was also extremely hard. We felt we could live there if there were a more comfortable sofa and maybe a rug or something else "soft" in the space. The showers were great.