The park is not barrier-free (accessible for wheelchair users), for your reference. There are no ramps, only stairs, and the paths are not paved in the Japanese garden. Even for able-bodied adults, some parts can be tricky for walking/going down the stairs.

Entrance fee is ¥150 for adults, free for young children. At the entrance there is a stamp table and a few stalls with various goods like soft serve ice cream, postcards, calendars, etc.

There is another shop with various souvenirs and some refreshments.

The mansion, as others mentioned, is an extra fee, as is the tea house.

The areas for roses are quite small, and it was very busy at 11am in late October (on a weekend) when most of the roses were in bloom.

There are various places to sit and enjoy the scenery or a snack.

It is about a 10-15 minute walk from Komagome Station.

Recommend visiting very early, right when they open or on a weekday.