I stayed at this Pirwa Hostel with 4 friends when we went for our amazing trekking experience at Machu Pichu and in my view it was good choice.

Service was very good, the personnel of the hotel was always willing to help and with a friendly, positive and can do attitude. Breakfast was good, but as every hostel with limited options, in fact I would change the cereals, which as a regular cereal eater I didn't enjoy much (Although they weren't old, one intuitively thought they were due to their texture).

Location: Although it was a few blocks of distance from the main center of Cuzco (Which in fact at night, with a few drinks, aren't very welcome due to their high inclination), the positive aspect about this is the 0 noise and excellent sleeping quality.

Rooms were good, nothing to criticize about them. The only not-positive comment I feel necessary to share with other fellow tourists is the one of having a very short open-air walk from bedroom to showers. A fact which wasn't comfortable for having first or last hour showers due to their low temperatures at Cuzco.

As said buy another traveler, Wi-fi only works in the room next to reception and computers are pretty old. However, they are useful for their expected functions as a back-packer toursit, which don't require new or newer PC's, being online chatting and writing emails. Lastly, although this doesn't mean that a PC actualization for a bit newer ones wouldn't be appreciated by guests ;)

Hope it helps in your decision.