Hi, I'm currently a History of Art student at Aberystwyth and I have to say its a really good course
I would definitely recommend the course, especially as Aberystwyth University is a great place to study. You have the Thomas Parry Library, The Huw Owen Library and the National Library of Wales which are all great to aid your studying. I think any History based subject taught in Aber is great, because the town itself is very inspiring; with its Castle ruins, old architecture and Old College, it just has a lovely feel to it (plus you're by the sea).
Also, you are taught by some great lecturers and Seminar tutors who really know their stuff. There's not a big group of us, maybe only 20 doing the subject, but it makes everything very close knit and we're all good friends now.
There is a great emphasis on Art in Aber too, with the Arts Centre holding exhibitions regularly and the School of Art doing the same. They even have futuristic looking workshops on campus which visiting artists can stay in to work on their art. Also, we have some mature students on the course this year, I get the impression it is popular with mature students.
As you mentioned that you don't feel you should aim high, I would put York and Oxford Brooks as options, but Aber is ideal as you only need 240 UCAS points to get on the course, which is actually quite easily achievable. Also, we do have a lot of foreign students on the Art courses and in the University in general, so you would honestly fit right in. I have friends on both the Art History and the Fine art course (the 2 subjects share some classes together), who are Polish, Latvian, Spanish, American, Finnish, Bulgarian and English of course. Art and Art History in Aber do seem to be popular subjects with oversees students.
If you need any help with paperwork, details etc. and accommodation, I'd be more than willing to help you out as best I can