Our flight arrived early and immigrant/traffic was faster than expected so we arrived at the apartment more than 2 hours ahead of the arranged check-in time. Despite communicating that we are already at the apartment 2 hours ahead, the host was still 10 minutes late at the arranged check-in time. So remember to get your arranged check-in time right!
The apartment could have been better stocked with supplies. There was little or no shampoo, bath gel, clothes washing detergent, clothes peg, coffee, sugar, cooking oil. Whatever was there was probably left by previous travelers. It would not cost the host a lot to provide these supplies but it would have gone a long way for the guests. Good thing a small Carrefour Express is just around the corner so you can buy almost everything there.
The apartment is clean and like an Ikea showroom. Kitchen amenities (stove, washing machine, dishwasher, fridge, microwave oven, conventional oven, coffee machine, toaster) are new and works great. Air conditioning is strong which is perfect for hot summer days. Hot water shower has good pressure and hot water capacity. Bed is comfortable.
Like many have pointed out, it has a fantastic view of Sagrada Familia. Being in the middle of a tourist spot means there are a lot of food options. Just downstairs, there is McDonald's, Five Guys, Taco Bell, Burger King, KFC, Costa Coffee, couple of bakeries and ice cream stores. For a great meal, Casa Angela and Tuscania is highly recommended and is only a few minutes walk away.
That said, while the apartment is close to Sagrada Familia, it is not exactly walking distance to most of the other sights in Barcelona, most of them near the Gothic Quarter. We find ourselves taking the taxi everywhere. Thankfully, being a tourist spot, taxis are readily available and cheap (about 10 euros to get to most places).