We loved our time at Nelson's apartment but just regret that we did not find time to visit him at his work, as he'd suggested. His cousin met us and was very kind.
The apt. is just up the street from the Santa Catarina overlook and very close to a Metro station and the 28 tram. Walking was very easy over to the Bairro Alto neighborhood and to transportation. The street was not nearly as steep as some of the others.
Comfortable beds and big bathroom. It seems like the shower head is being repaired.
As other reviewers have mentioned, this was an extremely "lively" part of town. We were there in June and on a weekend. I'm not a light sleeper so was fine, but if you are, this might be a concern. We were impressed with how quickly the streets were cleaned.