We had a great stay with Holiday Rentals.
The suite was was appointed and perfect for my wife, my teenage daughter and I.
It was nice to have a reception desk and the staff were very polite.
The facilities were just ok. yes there is a pool, but it is tiny and always swarming with kids, so don't think you will be able to go in for a relaxing swim after a day of walking around in the Sevilla heat.
The location does have access to nearby restaurants and a very large supermarket which is great (and which we took advantage of) but its normally a 15 to 30 min walk to most of thr landmarks. it wasn't too hot when we were there but something to consider