Leonardo was really helpful and nice, both before and during our stay.
Before arrival he gave us very detailed directions to the apartment and was super-fast on responses.
While there he made us feel welcome with local advice, new year's messages and treats for myself and my girlfriend.
The flat is well positioned in the city so we walked to 95% of the places we wanted to visit, and quite a few were under 30 mins away.
We really enjoyed our Barcelona trip and I'd definitely recommend Leo's place.