I've stayed in Casa Fiesta twice now (last year and this year) and experience has always been pleasant. Both times we stayed in a room with veranda, so there's great view of the ocean. Rooms and bathrooms (with hot & cold shower) are clean, and you get clean towels, bedsheets and pillow cases (I love how soft their pillows are). There's fridge, cable TV and free wifi (although signal is very weak).
The place is very near restaurants, and it's not too crowded since it's located in Station 1. It's a short walk going to Station 2 anyway, if you feel like going to where the action is.
I will definitely stay at Casa Fiesta on my next visit to Boracay.