These are more tips than dislikes: The private terrace with 300 degree views and quiet location make up for any slight inconvenience.
Beds are traditional italian, hard-- but this was very uncomfortable in comparison with our other hotel stays. If you are on the larger side you'll feel the springs. The mattress should be upgraded. But, this is a guest house not a hotel so some of this is expected.
As per normal in Italian homes, the bathroom was also pretty tiny. Its fine and clean but the shower is very small (normal for Italy). As per normal for most guest house/b&b type places linens and towels aren't changed every day which is completely fine by us, but just noting it.
You should pack light, there are stairs everywhere in Positano. This place has some (less than the other b&bs in that vicinity but as its a residence and set back from the road you will have to wheel or carry your luggage about 1/8 mile from where you're taxi drops you off and down about 50 stairs in total. Its not hard, and if you pack too much you can call a porter.
Breakfast start time at 9am is way too late. We would have loved an early breakfast so we could set out for our day before the crowds and heat.
Views are amazing. This place is about the terrace views and beautiful setting. Its close to restaurants away from the main plaza which make it much quieter and peaceful. 500 steps down to Fornillo beach which we liked better than the main beach in Positano. Free water taxi to main area if you've eaten at the cafe recommended by Peppe. The views are why you stay here.