Book it! This is a very nice, clean and confortable apartment managed by very professional people with four things that are valuable in Madrid on vacation during the Summer: Central location ( La Latina neighborhood), close to restaurants, good air conditioning and quietness. Just two things to be aware: There is no el elevator and there are a lot of stairs to go to the 3rd floor. This was good for us after eating all the tapas we ate 🤤, but for someone with compromised/ limited mobility can be a problem. Also, the main room has a full size bed, not a queen, could be a problem for a “not size 2” couple using the bedroom. We use their airport shuttle service and it was good, just make sure the driver understands pick up time is not landing time since you have to go through immigration, luggage, etc.
Just book it, you won’t regret it.