Vasco was a great host, even fixed the hallway lighting in the building the day after I arrived. The flat is cozy, has anything you could need and makes you feel like home. And of course, that view is stunning. It can be a bit exhausting to reach it, especially in the evening, since it is located uphill and not quite in the center, but the neighborhood is nice and quiet and the view makes up for it. Besides, the taxis in Lisbon are not expensive, so that is an option too. The only real problem I had were the mosquitoes, probably because the river is near, since I have not noticed too many of them in other parts of Lisboa, so something that protects against mosquitoes is a must.
All in all, my trip to Lisbon was a success, Vasco is a good host and the apartment is one of the nicest I've ever been to. I would definitely recommend this to anyone who wants a quiet, peaceful stay in Lisboa.