Overall a good stay at Mario's. If you get the place at the regular (~$69usd I think) rate, it is great value and I would recommend.

Pros:
- very nice apartment, very modern, everything new and clean
- full kitchen with stovetop, oven, fridge
- new modern bathroom
- washing machine
- small balconies
- good area in the old town. in walking distance to all the main attractions, and plenty of food & bars nearby
- TV with language options for when you cant be bothered going to a bar again

Cons:
- really noisy kids upstairs, yelling and running around pretty much non-stop til about 1am. you can even hear their cartoons blaring pretty clearly from the apartment
- kitchen and washing machine but no supplies, eg/ washing powder
- we had an increased rate of around $100usd/night due to it being festival (Ferria de Abril) week in sevilla. annoying because the Ferria is pretty much just for locals anyway
- not sure if it shows this in the ad but we didnt realise; it´s 2 single beds instead of a double bed