Stayed near Devils bridge last June. I can recomend getting a Aberystwyth A.A ticket.The club is very well run and they have about 8 lakes that fish well in June,especially when the Coch y Bondu Beetle is about

. They also have fishing on the rheidol, but it may be a bit early for good Seatrout fishing.They do have a good web site which is worth a look.
As Mostyn has sugested you will find you are fairly close to the upper Wye and some other rivers on Wye and Usk tickets, they will be at their best for Trout at this time of year so well worth a visit.
Steve