God forbid I give the Tories a get out but Housing & Homelessness policies are devolved powers.
Welsh Government have done a decent job with the Housing (Wales) Act 2014 but a lot of its objectives are hamstrung due to a lack of money, lack of access to available services (as you've touched on).
New models of working with homelessness are supported by Welsh Government but it'll be interesting to see if they're the answer or indeed sustainable.
Only an opinion.