Overall, this apartment is great. The location is wonderful. It's extremely close to many of Barcelona's top sights. Rosa is so cheerful and friendly, you can tell she cares about guests.
A few issues, however. This apartment has alternating dark and light curtains. It gets extremely bright inside very early. The air conditioning works, but it does not get super cold. Furthermore, even though the apartment is in a relatively quiet neighborhood, when loud cars, trash trucks, or drunk people walk by downstairs, you WILL hear them. If you're a light sleeper, please be warned.
A great place, with some minor issues. Thank you, Rosa!