Maria's apartment is a brilliant place. It breathes Sevilla as few buildings do, while making you feel at home at the same time. It's even more beautiful in reality than the pictures already make it look!
Its location is perfect for sightseeing trips, while still being easily reachable by car - there's a 24h underground parking practically next door. Regular supermarkets or bakeries are a brisk walk away, though. Also, one of the buildings right next to the apartment is in an advanced state of disrepair. It looks (in march '17) like it's going to be renovated, but as it doesn't show on the pictures, it's a surprise to see it when you arrive.
The interior of the apartment is authentic, well decorated, spacious and impeccably clean. And I'm sure it's nice and cool in the blazing hot Andalusian summers. The facilities were good too: everything works seamlessly, from the showers to the wifi. The kitchen is well equipped, which a range of stuff you might need. That said, there was a shortage of wine glasses, and the mocha pots provided for making coffee were leaking.
Beds, sheets, linnen and towels were all provided for, and were of good quality. During our 8-day stay, we would have welcomed some extra, or replacement towels, though.
Communicating with Maria was fast, easy and pleasant. She is very helpful, friendly and professional.
Summarising, I would highly recommend this apartment - and with a few details solved, this would be a 5-star recommendation. In a 5-star recommended city and region!