I will be on a family vacation this June/July and spending about a week in Alsoors on Lake Balaton. I see there are many trails behind Alsoors and in the wider area. I'm a mountain biker and would love hints about:

A) tour guides. I'm willing to self-tour, but it would be awesome to have someone with local knowledge to guide.

B) any general ideas about off road riding in Hungary (what trails and land is legal?)

C) bike rentals. I see some in Alsoors but I'd like to have a decent bike for the week. Nothing fancy but "servicable" for off road use.