I didn't actually meet the host but she was very quick to respond to all my messages, explained everything very well and put me in touch with the lovely guardian who lives in the apartment block. The guardian was very kind, helpful and attentive.
The apartment was small and cosy and well equipped. It was very well positioned in a safe, private courtyard which was very peaceful and quiet in the evening. In spite of all this, I didn't sleep very well at all during my stay. I found the bed quite bumpy and uncomfortable and the pillows quite old and not very comfortable. I was also bitten very badly by insects during my stay which didn't help my bad night's sleep. I'm not sure if it was mosquitoes or some other bug because the bed is quite old...
Other than this, the Internet did not work at all during my stay which made life quite difficult as my phone had been stolen when I arrived in Paris. Thankfully the guardian very kindly lent me an old mobile phone to use as an alarm clock which was helpful.
If I would suggest improvements it would be that a new matress and pillows are imperative and to either state on the advert that the Internet does not work or to to buy a proper Internet connection, as the free wifi is obviously not strong enough.
Overall I liked the apartment and felt safe and well attended to, but I would say that the price is rather high considering the state of the bed and the lack of Internet.