Add spaces: Butalas,itisclosedfortheSundaysowecontinuedownViaUrbana(aroadparalleltoViaCavour)untilwefindacosybarwherewecanenjoyanopenair-espresso.

Answer: But alas, it is closed for the Sunday so we continue down Via Urbana (a road parallel to Via Cavour) until we find a cosy bar where we can enjoy an open air-espresso.

Add spaces: Aftermainlycloudlessweatherinthemorningmostlycloudyweatherwilldominateforatime.

Answer: After mainly cloudless weather in the morning mostly cloudy weather will dominate for a time.

Add spaces: Theworkpieceisfastenedinaholdermountedonamovablearm.

Answer:
The workpiece is fastened in a holder mounted on a movable arm.