Loved Greg's place and his hospitality was awesome. Apartment had everything we needed, nice cool breeze with a big window/balcony, towels, etc. and Greg even left a flower for us on the bed. Seriously awesome hospitality!
The area does stay pretty active well into the early morning (still heard voices around 5am of the fun loving Madrid locals), but no problem once the window was closed.
Either way, would stay again. Great location, very easy to book, and probably the most awesome decorated place we've stayed at to date.