Our stay with Jonathan was great! He gave us our space, but was happy to help as best he could whenever we needed it. Although there was a bit of a language barrier, his cousin spoke excellently (otherwise google translate was more than simple to use).
Because we had a longer stay Jonathan was kind enough to give us fresh sheets and towels.
Internet connection was very good and fast.
The apartment is very well located, there's a supermarket less than a minute away. La Ramblas and La Boqueria Market are less than 10mins by foot.