I stayed in this beautiful sunrise apartment for a month while working remotely. The views really are the best and a lovely distraction with big cruiser boats coming in and out below. The apartment's location in Alfama is great, with restaurants and Fado a little stroll down, and views (not as good as from the apartment) and your famous tram 28 a slight climb up. There's two rooms, the beds are comfy, there's enough facilities in the kitchen etc. But careful running too many things at the same time e.g. kettle & toaster. The kitchen table was big enough for two of us to work from comfortably which was actually the main thing I looked out for when looking for an apartment.
The stairs coming up to it are quite steep, so I would not recommend this place for someone with reduced mobility. It is on the top floor under the roof, so be prepared for some head bangs if you're tall, I'm about 170 cm and did not suffer this problem.
The host was great, friendly, and always tended quickly to our questions / issues e.g. the washing machine door got broken just before we arrived, but while it was being fixed, the washing was done for us.