The property is cozy and the location of the property is very convenient to many of the main attractions in Lisbon. However, during hot days, I found the apartment rather hot and stuffy, especially at night, since there is no air conditioning and has only one portable fan.
I had a little problem with the electricity going out but Maria and her daughter were very responsive to the problem.
I would recommend the property during the cooler months of the year but during the hot summer months, get a hotel room with air conditioning. The price is pretty similar.