Over all we enjoyed our stay at Eva's place.
Arrival was good, ewa was very flexible and there when we arrived.
She gave us a quick tour and explained us everything.
A very well done guide is in the apartment about what needs to be known of the Barcelona
There was 3 wifi, so probably from friendly neighbour, but never was a problem
The apartment is well renovated and very clean although a bit small, it was ok for us but be reasonable in your expectation as your located in old portion of the city (which is great) so some compromise to do.
Small kitchen with fridge was helpful, although we rarely resisted having diner around Barcelona