I just had a lovely stay in this super central studio flat! You can basically walk in most of the key areas of Lisbon and Paulo is very helpful in giving you information. The view from the flat is also amazing, overlooking the castle and with a lot of light coming in. It was also very clean and with all essential amenities. Just bear in mind that it is on the top floor with some narrow steps - for us it was not a problem as we only had one back pack however you need to be fully aware if you wish to bring your luggage up . The climb is definitely worth it though :)