I used eventhuse following a recommendation from a friend to help organise a stag weekend in Krakow recently for myself and 8 friends. I’d been on a stag do before but this was the first one I was in charge of but they were quite helpful and delivered on the itinerary, providing ideas on activities/clubs/bars and on prices. Our guides were pretty nice too. Wouldn’t hesitate to use them if i am appointed a best man again.