Niko's a great host! Friendly, informative, and happy to help. We were a couple that stayed for four nights.
Keep your expectations in check - it's in the middle of Manhattan! The room is small but cozy, the bed is comfortable, and the bathroom is clean. You'll need to climb some stairs, but they're easily manageable. The location is great as a hub for exploring - close to multiple metro stops and walkable to Central Park and Times Square. We heard pigeons in the morning if you're confused about the interesting noises (not loud).
All in all, it was everything we expected and would recommend staying with Niko.