My husband and I spent 4 nights at Nicola's place. We had a lovely stay at his flat, where everything that we needed was provided (complete kitchen, towels, shampoo & soap, good wifi) and everything was very clean. Nicolas was very kind and helpful during our stay.
You can easily walk to most of the famous Barcelona neighbourhoods and there are a couple of subway stations within a 5min walk. Although the neighbourhood where the flat is located has a lot of options for bars and restaurants, the flat's street is nice and quiet.
We definitely recommend this apartment!