NO not PVA , new paint will just skid about on top and dry patchy , use watered down cheap matt emulsion.
One coat of weak emulsion then two full strength should do the trick, save money and use contract emulsion for new plaster rather than vinyl matt.
You just need it on there as a prime coat mate, it basically saves you money by stopping the first coat of paint soaking onto the plaster which is still porous. Roll on a good coat of 50/50 and you'll see what we mean, watch it soak in
There's a Jewsons in the town center half way up on the left , better than the robbing b#######s in B and Q
Just checked. PVA is what you use on old plaster before skimming with fresh plater. Cheap watered down emulsion is fine. Also known as a "mist coat"
How long is the rental agreement for? If its a year, and you can decorate and carpet for £600 then you have come out evens.