My husband and I stayed for one night at Manuela's lovely apartment. It's located in hip and historic Barrio Alto. Despite the proximity to good restaurants and bars, the building is on a quiet street. We were even able to keep the windows open late into the night to let in a nice breeze. During the day you can open up the skylight for a beautiful view of the whole city. The apartment itself is in great shape, cozy, comfortable and clean.
Manuela was a very gracious host, responding immediately to our messages and waiting up until almost 11pm for us after our flight was delayed. She even allowed us to check out late since our flight wasn't until the afternoon, and her next guests weren't arriving until the day after we left. We hope to come back soon and stay longer next time.