Lodging in Barcelona for 9

We are a family of 9 which will be cruising next summer out of Barcelona. Does anyone know of a good Air BnB location, VBRO, or apartment style hotel which will comfortably sleep 9 ranging from the ages of 9 to 67? We have two in our party in their 60's and 3 kids. The rest of us are all middle aged adults. Would prefer a centralized location to sightsee if possible.

Thanks everyone!

Following. We have 8. We can split up 4 and 4 but want to be close.

I am also curious as I have 8 people (needing 4 rooms) going next may. I have looked at some apartments for rent on booking.com. They have 4 bedroom apartments to rent for $750 to $1,250 for 2 nights. Just curious if anyone has gone with something like this?