This is a really good apartment for two travelers. The location is great, especially if you are traveling by train and intend to use the metro to get around Barcelona - there's a metro stop just outside the door. This place has a nice kitchen for cooking, good amount of space, and comfortable beds. The host was very kind and gave us some great travel tips.
Be aware that this apartment building has several units that are rented out to tourists. Our first night was perfect, but our second night was interrupted by the apartment below us partying and blaring loud music from midnight to 4am.
This is a great place with a good value overall, but be aware that other tourists in the building may impact your stay!