This is a great place for 1 or a couple. The house has character and is well located. The thing for us that I hadn’t read about is the 2 (free) nearby elevators that made getting to the apartment from the city so easy. Within 5-10 minutes of leaving the apartment you are at the main square in the city. And of course the castle of Sao Jorge is right above you.
Juan is a friendly and helpful guy. He did a (much needed) load of washing for us , hung it out to dry and at the end of the day it was ready for us.
The bed is comfortable and the shower is good - though you need to be careful with your footing.
Lastly we did a free walking tour with Hi Lisbon tours, it lasted 2 hours and was really good.