Nelson's place in Lisbon is in a great location. Nelson gave us easy directions on how to get there from the airport on the Metro and then it's just a short walk. There were 2 of us and the apartment was just the right size, it could be a squeeze with any more.
The guide we got in advance was great and we followed advice from it on what to see and do. The street the apartment is just off of has a great vibe in the evening with people getting drinks from the bars and standing outside. Lots of great places to eat within walking distance too. We'd recommend the Small Bar for well priced drinks. As it is so close to the nightlife it can be noisy at night but I'd read this on reviews and it didn't bother us at all.
Communication was good ahead of the stay and when we arrived. I would recommend to anyone coming to Lisbon.