A fully equipped and cosy apartment(including an portable airco unit), 5-10 minutes walking distance from the centre of the city. The apartment is located on the 2nd floor in a residence area. There is a narrow and a bit steep staircase that lead to the apartment.
There is a restaurant right under the apartment, which is been managed by the downstairs neighbour.

The apartment is as shown in picture and has a fully equipped kitchen. There is a super(mini)market, just around the corner.
The Wi-Fi was working perfectly and I had no problems what so ever with the internet connection.
There is a wooden floor in the living room and the bedroom. Apparently it isn't fully sound proof and you are required to be very quite when walking after 10 pm. I did my best and hope Helena haven't receive any complaints about me from her neighbour downstairs.

Before arriving,Helena has provided me with detailed information regarding things to see in Lisbon and detailed information on how to get to the apartment from the airport. I have, eventually, chosen to get a taxi as this was the fastest way and also I was slightly afraid that I will get lost with all the small streets in this area. I was lucky to have a taxi driver that didn't get lost. After knowing the area better, I had no problem finding the apartment.

Helena welcomes you like meeting an old friend and explain you in details how everything works. I was arriving in the evening and on the day of my arrival, she has recommended me a restaurant, which turn out to be a very good restaurant, where I could have diner.
Helena truly knows Lisbon and surrounding very well and her tips and advises were spot on.

2 small remarks:
1. There is a glass window between the the bedroom and the bathroom. It is NOT a see through glass, so privacy is never an issue. But when the lights in the bathroom are on , they also fall on the bed.
2. The mattress on the bed was too soft for my taste. I slept well, but at the end of the stay I had a bit of backache.

All in all I will recommend Helena's apartment for anyone want to stay in Lisbon and if I ever go back to Lisbon, I will try and reserve this apartment again