I had a terrific stay at Carlota's apartment.
First, her place is VERY easy to get to taking public transportation- and it's also extremely centrally located to many of the top tourist attractions. There are incredible restaurants, galleries, scenic places and also a grocery store all easily within walking distance.
Carlota made me feel instantly welcome upon my arrival, sort of like a favorite aunt. She was sweet and funny and just so easy and responsive-- I had an issue with the wifi and she rushed over w a portable hotspot. She even invited me to her home for dinner.
As for the apartment itself, it's in a very safe neighborhood-- there are police standing about 2 blocks away as well as a police station. The water pressure was great, everything else as pictured. Please know that this is THE party district of Lisbon and so there will be a lot of noise outside of your windows until at least 1am every night in the summertime. That was fine with me. That said, she has double-paned windows and so it's actually very easy to sleep.
In short, I felt extremely lucky to have stayed there.
All the best,
Tom