Staying at Petrona was a great choice. I was little skeptical at the beginning due to lack of photos, but the house was amazing and there are two queen sized beds and dining room, kitchen, bathroom, and of course parking spot for free. It's better to leave your car at the garage and take bus/subway as the parking fee is very overpriced, and hard to move around in the city. You can take B103 in a block from the house and transfer (free with any metro card) to get to anywhere sightseeings. Petrona consistently checks with us if everything is okay, which I really appreciated.