Very nice, quite unique place to stay. Clear recommandation for the ones that are seeking something special to stay at in BCN (but don't have to look after their budget ;)
Perfect area with many nice places just around the corner.
One personal note:
Although the apartement is recommended for up to 12 persons, one has to know that four of the sleeping rooms are very nice - beautiful and bright. The two additional rooms are more or less very basic and darker, so not that nice to stay in (for a longer time). So I personally would recommend the apartement for a group of up to eight people using the four nice rooms to have a beautiful stay in BCN.
Or also for a stay with more people, but having to live with the quite basic sleeping rooms. (So you maybe have to plan to fight about the four beautiful rooms.)
Yes, life can be really hard if you have too much money to spend on your holiday ;)