Leonardo was an excellent host. He was very friendly and communication was very good. He was very helpful and very quick to respond to questions and requests even going as far as immediately changing the lock on the very first day when a new set of keys he'd cut wouldn't work. It's quite a small flat but Leo has really made the maximum use of the space, managing to fit in two little bathrooms and a kitchen and he's thought of pretty much everything. The size of these takes a bit of getting used to but after a few days I stopped noticing. There's a huge TV which I didn't think we'd use but in fact we did watch some late night shows on netflix and it was a nice way to wind down. The flat is very nicely designed and we liked the comic/superhero theme. The area - Lavapies - used to be very neglected but is undergoing a gentrification process. There's an excellent 24 hour supermarket (Carrefour) just 2 minutes walk from the flat and lots of bohemian shops and restaurants. It's just a 15 minute walk to the centre (or 2 stops on the metro) so convenient to get around.
The only thing I'd flag is that in one of the two rooms the double bed fits precisely between two walls and I think a tall person would struggle sleeping there. However the other room is larger so it would only be an issue if you had two very tall people in the group.
All in all, a great little place.