Prisoners in Vratsa have begun to use real toilets instead of the usual chamber pots as part of the campaign to improve conditions in Bulgaria's jails.
"No other Bulgarian prison has undergone such renovation for 25 years," the prison directorate's deputy chief Emil Madzharov commented after walls were recently repainted and bathrooms were installed.
But in this prison in western Bulgaria, built in 1914, four inmates are still forced to share one tiny cell and European standards remain out of reach.
According to prison directorate chief Petar Vasilev, no prison has been built in Bulgaria for about 80 years.
This is "not normal" for a European country, he noted.
Each prisoner in Bulgaria has an average 2.75 square metres (29.6 square feet) of cell space, far below the EU-required six square metres, justice ministry data shows.
A newly adopted law plans to provide an average four square metres per inmate by 2012.
Conditions in Bulgarian prisons "are probably the worst" in the whole European Union, Vasilev told AFP.
"We cannot say that we belong to the European family, with prisons where buckets are used instead of toilets or where living conditions pose risks rather than guarantee the physical and mental health of the prisoners."
Jails are the scene of regular protests by inmates who "climb roofs, refuse food or hurt themselves" to demand better living standards, said Vasilev.
Now, a Bulgarian-British project in Vratsa and other prisons hopes to limit the spread of protests and halt growing drug abuse among inmates -- the number of addicts has tripled in three years -- by improving conditions.