There's a decent set of halls and although some are rooted in the 60's school of architecture, they are refitted on a rolling basis. A run down from an Aber student is provided below.
Trefloyne
Only to be attempted by those with a good sense of direction. The blocks are maze like with loads of stairwells and corridors. The rooms are nice with the same standardised furniture as Rosser and new Cwrt Mawr rooms.
PJM
Houses of 5-6 people (and a few flats) quite new so in good condition, quite quiet but easy to get to lectures from. Rooms are a reasonable size although upstairs are bigger than downstairs and the kitchens big enough for a lounge area.
Cwrt Mawr
New blocks are good with 10 rooms and shared kitchen, bathrooms and toilets need loads of posters to cover the painted breezeblocks. Amusingly on the ground floor they put special one way glass in as the rooms look out over a car park. Unfortunately they put it in the wrong way round! Old blocks are suffering from Penbryn symptoms (see below)
Rosser
Nice rooms, similar to new Cwrt Mawr rooms but with an en-suite (barely big enough to stand in) this takes up much of the space so don't expect to swing any cats inside.
Seafront
Not seen much of these, but you might get a sea view (then again you might get a view of the binyard of the bay). On a busy road with 2 of the clubs so can be quite noisy.
Pantycelyn
Welsh halls. Very political when it comes to Welsh matters, have been known to block off the uni demonstrating, no-one's sure what about!
Penbryn (or pen-grim!)
You like carpet? Edible food? Friendly staff? This place isn't for you.
Alexandra An all female hall until shut down in 1986 and sold off. Derelict and falling into disrepair until 2003 when a local business consortium independent of the university sought to upgrade it into student rooms as new departments started at the university. It is now used for clearing/standby students.
Second Year students tend to live locally in rented accommodation. In the third year, many students return to Halls, but the majority still live in private accommodation. Every year the university accommodation office produces a housing list with properties available to rent. In addition to this there are numerous estate agents in the local area who specialise in student housing. The good thing about Aberystwyth is that housing is relatively cheap when compared to many other universities, with average rent, including bills, around £50 - £60 per week.
