I stayed in Eric's place while on a business trip, so I really appreciated the great WiFi, AC and central location. FYI, practically nobody travels to Sayulita on business.
It was a bit loud at night with the music from a nearby bar coming through. I closed the door, turned on the AC and slept like a baby both nights. Don't forget to turn off the AC when you leave the apartment. I went to breakfast for 2 hours and I forgot to turn it off. Guess what happened when I got back? I felt like a jerk for having left the AC on, that's what happened.
You are right in the heart of Sayulita, a quick walk to the beach and everything else you might need in Sayulita. When I booked this place I thought it was going to be attached to a bunch of other units but this is a stand alone studio style apartment, which I really enjoyed. WiFi works great, AC works great and Eric accommodated my last minute booking and arrival perfectly.
If you know what you're getting, this is one of the best values I've found in Sayulita. I recommend Eric's place for people who already know Sayulita, you will love the location and you will probably be in the bar where the music is coming from anyway. Single people and couples would love it. I don't think it's a great place for families and there is a narrow staircase you'll have to get your luggage past, so it isn't the best for people with mobility issues.
Bottom line, great value, great location near the beach and activities and an overall great experience.