I visited Barcelona with my partner for three days at the beginning of August and simply loved Lemon's location and the layout of the room as well as the common areas such as the terrace, the lounge and the dining room. The staff was friendly and very responsive to organise a smooth check in. However, I didn't like the room facing the building's internal courtyard which didn't let enough natural light in the room. Also, there was no vent in the bathroom's ceiling, and we had to use the lids on the bathtub's and sink's drains to avoid unpleasant smell coming from them. I overall recommend Lemon, but next time I would book a different room with the balcony.
Thanks a lot.