Starting with the cons - it's in a busy/bustling part of town, so it can be noisy. You are near 2 subway lines, and you can feel the rumble in the apartment. (To be honest, it's pretty mild.)
And the pros - well, you're in a busy/bustling part of town and you are near 2 subway lines; basically the city is at your doorstep. The apartment is small but homey. The bed is comfortable, the water is hot, the A/C works and the kitchen is serviceable. I thought it was a good base for our NYC explorations.
Alvin was an *excellent* host. Although we never met he contacted us twice a day to make sure we were enjoying our stay and managing ok in his apartment. Many hosts could take a lesson or two from him.