We stayed at Erlah for two nights in June 2011. The guesthouse is no frills, but very clean and reasonably priced. The location to Lake Bohinj and hiking trails is convenient.
Rooms: include a TV, but are not air conditioned, do not have a phone, and you can only get internet if your room is located close to the kitchen. Having no AV was problematic for us, because keeping the windows open let in bugs.
Staff: was very friendly.
Food: We opted for having both breakfast and dinner included, since there are not many options for restaurants in Ukanc. The breakfast was your standard – boiled eggs, breads, yogurt, cheese, cereals, coffee, etc. Their specialty at dinner was trout, which was caught in the Bohinj River and killed that night, so it was quite fresh.
Overall, the pros were the location, friendly staff, and clean rooms. The cons were no air conditioning and mediocre food.
Because of the no AC, I would choose another place.