Vasco's place was pretty good. There were some good things and some bad, which we outlined below. Overall, it is not a bad place to stay when you are in Lisbon. Vasco is a great host, greeted us at the door and was accommodating to our needs, specially since we had just got off a transcontinental flight.
The location is, as others have said, at the top of a very big hill, so be prepared to either walk or pay the €2.50 for an Uber from the train station. We did both without any issues, but are pretty fit. You can also go up a bit and over to Alfama pretty easily without doing too much up and down. Nothing is super close other then a pizza place, so groceries and everything else is a bit of a hike. Also keep in mind it is 4 1/2 flights of stairs from the ground floor.
The apartment is a good size, bedroom is spacious, large table for eating, and the kitchen is recently renovated and well stocked with pots, pans, dishes, and everything you need. There is no oven, but a microwave with a heating element. We got buy, and cooked at home every day. The living room is ok, furniture is not super comfy, but it does the trick. Bed is comfy, but the frame squeaks. We simply moved the mattress to the floor and had no more squeak.
Wifi is completely awesome, with 100Mb service that was reliable and constant. We had no issue streaming or working.
The bathroom was a bit disappointing with some mold around the sink and shower and a noticeable smell of must. I also think there is a drain issue, so it's something that should be fixed. Hopefully it is cleaned better for the next persons stay, as we did not feel very clean after showering.
The view is awesome. You can do plane watching from the kitchen, boats loading in the port, and just a beautiful view of the river. The balcony is not private, but we never saw other tenants. Would be a nice place to lounge on a summer night (was too cold when we were there).
Overall, we give this place a 3.5 out of 5. We gave the host a lot of tips to improve the spot. The bathroom