Hostel search site that lists prices by type of accommodation selected

I have this problem any time I try to use sites like Hostelworld and Hostelbookers for private rooms or shared rooms of a certain size. When you filter by room type, the prices in the listings are whatever their cheapest room type is even if it's not what you filtered for.

Is there any hostel site similar to Hostelworld, that lets you filter by room type, then changes the prices in the listings to show the cheapest valid room for my filter selection?

For example, suppose there are three properties where I'm going:

Superhostel: Double: £45 per person, 4-bed private: £25 per person, 16-bed: £10 per person
Megahostel: 4-bed: £21 per person, 16-bed: £12 per person
Bob's B&B: Single: £50 per person, Double: £30 per person

I'm looking for a hostel site where, if I select "Double room", I see a view like this, that tells me clearly what the prices are for the cheapest match to the option(s) I selected:

Superhostel: £45
Bob's B&B: £30

...but sites like Hostelworld give me an unhelpful view like this, which give a misleading impression about which are cheaper and what the normal price range is for what I'm searching for:

Superhostel: Private from £25, dorms from £10
Bob's B&B: Private from £30

...or sometimes even like this:

Superhostel: £10
Bob's B&B: £30

Here's a real-life example, I'm looking for a cheap single room for a meeting, I've selected "one person" and "single room", and the top listing is this, which looks impossibly cheap: