Уou will never find another apartment at that value for money ratio in Barcelona, never!
1. The tourist tax is included in the price.
2. The flat is located 15-20 min. on foot from everything, simply everything: the sea, Sagrada Gothic Quartier etc. If you don't mind walking, all the major sights accessible on foot.
3. It has all the amenities, a small sitting/eating area, a cooking space with everything you need, a small balcony.
4. We had a late flight and Carolina waited up for us. When we arrived there was a plate of cakes, milk, juice and water left for us, which was so sweet.
5. The place (and neighbours) are pretty quiet.
About the drawbacks: the hot water boiler is enough for 1 shower only ('cause it's small). And it might take some time to heat it up again. Keep that in mind if you are not travelling just by yourself.
Oh, and if you feel like seafood - do not miss La Paradeta. The food and prices are fantastic there! And Billy Brunch is also great