Ramon's airbnb was hands down the best one I stayed at during my Spain trip. It was clean, the furnishings and appliances were modern/new, it was in a good location that was safe and quiet (Seville in general is very safe and quiet), the wifi worked well, and it had all the basic necessities you need (shampoo, body wash, fresh towels, detergent for the washer, etc.)
Would definitely recommend this airbnb for all group types and would definitely stay again!