I stayed with my girlfriend at Helder's apartment for 4 nights. It should have been 5 nights, but two days before we arrived, Helder told me to look for another place for the first night, because he maked confusion with his calendar. it was a big problem and luckily I managed to find another room right away, and Helder gave me a big refund, so we stayed at his room for a special price. The apartment is very close to the center and public transport, so it is ideally located for visiting Lisbon, out of the chaos of the historic center. The apartment is very large and clean and the room is comfortable enough for two people.
Despite this we had several problems, perhaps due to too many people in the apartment at the same time. With the washing machine turned on and the hair dryer running, the power has often been turned off and I had to manually reactivate it. I had to warn people who were using the hair dryer to turn it off for a few minutes or try another power outlet.
The last night my girlfriend didn't feel very well, but we couldn't sleep because in the other room there was a crying baby and the parents were on the phone on speakersphone until around 2 am. As if that wasn't enough early in the morning it started raining water from the ceiling in the bathroom; then I realized that water was falling also in the corridor and in the kitchen.
Helder immediately rushed to try to resolve the situation.
Overall I can't say it was a positive experience, but for some things it was more the misfortune of being in the wrong place at the wrong time (loud neighbors and floods). Certain other things, however, should be improved, such as managing the guest calendar and various electrical problems.
However, Helder is a very helpful person and very attentive to every guest's need and has always been ready to communicate with us.