I live next to HV, and I love pho, so I go here regularly, but it's really out of necessity than anything else. Where to begin..
Service - Yes, service in Singapore is generally bad, but this place really takes the cake... everyone seems extremely unhappy to work here... bad service all around, your food is just tossed to you and I've never seen staff seem so angry all the time... I go here almost weekly, and I just have to tollerate it..
Food - of all the pho I've had in SG, this is probably I'm most familiar with, it could be better, but it does the job when I have a terrible hang over..
Value - wow... so expensive... at least $17 for just a bowl of pho... insane.. especially considering the service and ambience..
Ambience - Sit outside if you can.. inside smells terrible and dirty... your clothes and hair will suffer everytime you go inside... they barely turn on the aircon, which I think contributes to the smell...
Once they brought me a condiment tray with used lime pieces on it.. they took it back with barely an apology (thanks for serving me used food).. also, I noticed recently that they just mix the chili and sambal sauce.. so if you want to spice up your soup, it just tastes like sambal, which isn't very Vietnamese..
Seriously wish something better would open up soon! If another pho shop opened up right next door, and they made half an effort, Pho Hoa would go out of business....