Monir is an absolutely amazing host - who truly cares about your experience and making sure you maximize your time in Lisbon - providing us with all the best things to see and do. The place is also perfectly located about 3 minutes from a major metro stop or 20 minutes walking to the city center - with the walk being gorgeous... with it being just far enough removed that there are very few tourist day or night.
My only things to note would be this is not an ideal place for sensitive sleepers as their is noise from the street each night - people + loud garbage trucks at midnight, and the kitchen is good for light meals, but the items needed to truly cook if you're getting groceries from the farmers market are a bit light.
All in all - if you're a heavy sleeper and want to enjoy ALL the great food Lisbon has to offer - the unit and Monir make for a great experience.