I stayed here for three weeks. The hosts are great, as is their dog! It's a quiet area with respectful neighbors - the bed is also really comfortable so I slept really well here.
It's technically in Anzures but it's close enough to Polanco and other neighborhoods that within 10-15 minutes you have everything you need.
My phone did have some trouble connecting to the WiFi but my laptop had no issues. Otherwise the WiFi was fast and great for what I needed to accomplish.
The shower is fairly weak so that is one area I had minor issues with. I also asked the housekeeper for a fan and it wasn't available - it was quite hot during my stay and a fan would've been helpful.
Overall I enjoyed my stay and would stay here again.