I stayed in Lisbon for five nights during a very unseasonal hot few days. I was traveling with several friends who were at other AirBnBs and hotels, and my place was the only one with air conditioning! So I was super comfortable.
The apartment is very cute and comfortable for a solo person (as I was), and in a great location. You can access all of the bars and restaurants in the Bairro Alto and the waterfront was only a mile away. Wi-Fi speed was great and I was able to stream Netflix. Even though bars tend to close late, the neighborhood was super quiet, so I was happy about that. And they had the blackout window shades so you could get a great night's rest.
I may have to come back to Lisbon again next year and I would definitely stay here.