We stayed 6 nights in Jakub appartment, we were 2.
The appartment is exactly as on the photos, clean, well organised and equiped. Enough space to relax on the sofa and prepare the dinner in the kitchen. The bed is cumfortable, you just need to be flexible to go under the ceiling, it is on a mezzanine ;-)
The situation is ideal, on the Karlovo place, 10/15 min by foot to classical touristic places, for other places, tramways and metro stop just in front of the building.
In few words, a real "havre de paix" ideally situated.