I would definitely recommend Oscar's apt if you're staying in Madrid. As a host Oscar was easy to communicate with and gave a lot of information before arriving. When I got there his friend Ricardo let me in, showed me around the apartment and told me a lot about the city, what to see, where to go and suggestions for my trip - it was great!

Apartment is really close to the Lavapies metro stop so you can get anywhere in Madrid easily and there's quite a few restaurants and shops in the area if you don't want to venture too far. Overall, it was a lovely apartment and had everything I needed for the trip. Will definitely stay there again next time I'm in Madrid.