I stayed at Rosa's place for 10 days while in NYC for an elective surgery - which means I ended up spending *lots* of time in the apartment during the recovery period and really getting a feel for it. The location was fantastic; everything I needed was within a block or two. The apartment itself was also perfect for my needs as a solo traveler who wasn't going to be cooking large meals. It's very pretty, warm, and welcoming.
Rosa and her co-host Hannah were easy to reach. There was an issue with neighbor noise at one point, and Rosa was quick to respond and proactive in her approach. I would stay again if I returned to NY on my own.