Our stay at Antonio's place was quite good. The apartment it's quite new and as such there are couple of small things still missing (e.g., some hooks to hang jackets at the entrance). The bathroom is quite small, with no windows or vent. As this is a low ground floor apartment, and windows are hard to open, there can be stale air sometimes.
Location was just great. 2 min walking distance from Marylebone station and 5 from Baker Street.
Antonio was a great host, always responsive and very helpful. He provided us with more coffee pads as we asked him where we could have buy more.