I didn't have too much communication with Ignacio aside from the initial greetings and thanks for booking niceties... But he puts you in touch with and uses a service called Minty Host, who were more than helpful and responsive. We were able to checkin with ease and get any and all info and questions answered right away. Valeria and Aurora were friendly and helpful and everything went smoothly.
The apartment is as it looks like online. Its walking distance to almost everything, with a subway stop 2 blocks away to reach further sites. Its on a quiet street in a quiet neighborhood which was wonderful. It also had great natural light throughout the home, which is a big thing for me. and perfect for 4 people.
The only complaints I have are that when we checked in for our week stay, there was only half a roll of toilet paper, one dish rag, and half a roll of paper towels. We weren't too bothered, wanting to go to the store anyway to get food to cook in the morning, but just wasn't expecting to have to get supplies that are usually already available at a rental. Additionally, there was a cool streak of weather when we were there thankfully (in the 70's and 80's,) but the week before and after it was 90's and 100's... that being said, there's no AC unit in the master bedroom and the way the layout of the home is, you have to have the Guest Room AC and Living Room AC on full blast to even slightly make a dent in the Master Room. A small fan would be wise to add for that master for sure, especially in the summer heat.
All in all though, realistically, I understand that these are minuscule issues and the home was exactly what we hoped for and wanted.
Big thank you to Ignacio and Minty Host, We plan on coming back to Madrid and if available, we would stay at Ignacio's first if its available again.