The apartment is beautiful and has a good amount of space. There were 5 of us and we were comfortable at all times. The beds are comfortable, which is a big plus. The bathroom in the hallway is a bit tight, and the shower water ends up escaping and wetting the floor, but that second part seems to be a standard design in Spanish bathrooms so that’s not a fault of the owners. They were very friendly and responded to questions I had. Check in was automated in a way that made it a lot easier than other places (though be ready to make a phone call if you don’t have calling capabilities on your cellphone in Spain!).
I would definitely recommend this place up to groups of 6.