We had a wonderful stay at Hugo's apartment -- stunningly decorated, beautiful views of the park and mountains, safe and friendly, and an easy walk to many fantastic museums, restaurants, bars, and nightlife. Definitely check out Hugo's restaurant recommendations, they were all spot on.
We really appreciated the huge, comfortable bed and couch, and the kitchen had everything you needed for any meal you want to make at home. The street can be busy during the day (you'll appreciate Sundays when they close for bicyclists and joggers) and there's a disco the next building over, but fairly good soundproofing on the windows.
Lots of super nice touches like a big jug of purified water in the frig, a sample of fantastic mezcal, strong wi-fi, Netflix, great water pressure, and plenty of clothes hangers.
Reserve Frida's House and Pujol well in advance, and you'll have a great stay too.