Our stay at Gaia's place was great. We booked just a couple of days beforehand and she was very accommodating. We had a transport nightmare arriving 3 hours late. She was completely unfazed, meeting us there and explaining how everything worked in the flat and where to find transport and facilities nearby.
The house IS tiny but had everything we needed. Likewise it is quite a way from the centre and from any other tourist accommodation that we saw, but that's clear in the listing and both metro and bus links are good. We even managed to catch a public bus to make the connection to get to Etna by public transport on a Sunday morning. We were glad of the washing machine on our return.
Gaia is lovely and speaks really good English. She has clearly invested a lot of time and thought in refurbishing the property and we'd be happy to return there if we were in the area again. Highly recommended.