This is a great place to stay! The location is central, but in a quiet street, close to everything you need: public transport, shops, bars and restaurants, and all the main sights in the center of Madrid. Constantine's appartment has everything (good wifi, coffee machine, toaster,...) and is very clean and stylish. The appartment is located on an undergrood floor but is surprisingly bright, thanks to its internal patio. No direct sunlight, but you'll get plenty of that in the streets of Madrid! Highly recommended!