I stayed at Carolyn's place for a month whilst visiting Hawaii on my own and had a blast. The place is a fantastic size (much too big for just me) and has absolutely everything you could need. Very clean and spacious, and Carolyn was excellent throughout with communication.
It's proximity to the beach, grocery stores, bike/surfboard rental places and main road to get you anywhere on Maui is brilliant. There's an excellent (and cheap) yoga class three times a week just across the road too at Nalu Resort. Look out for sea turtles at the beach right next to the apartment because they are there every day!
What more could you need?