County Limerick's roots are tied up in early Viking conquests, with the first fishing villages planted in this part of Ireland in the 10th century. The county capital is crowned by King John's Castle. Buses connect to Dublin in about 1 hour, 15 minutes; trains take a bit longer. In both cases, the local stations are prime car hire depots. It's also possible to fly into Shannon Airport and pick up your car there.
If you're fortunate enough to have car hire in County Limerick, you'll probably want to spend a day exploring the Medieval Heritage Precinct before planning a drive across the county. Popular attractions in the city centre include the Georgian House with its ‘Ashes Exhibition', a tribute to Frank McCourt's novel, Angela's Ashes. The Hunt Museum and the 12th-century St Mary's Cathedral are also of interest.
The most popular drive in the county is from Limerick city to Adare. This route sees plenty of tour buses, so it's a good idea to embark early in the morning or at least on an off-day. Adare is located 16 kilometres south of Limerick along the N21, and it's chock-a-block with medieval architecture and quaint cottages. If you arrive early enough, you're more likely to find a free spot in the complimentary car park behind the heritage centre.
There are plenty of hotels within striking distance of the Medieval Heritage Precinct. Greenhillsis a conference centre immediately outside the city centre. South Court Hotel is similarly located and also caters for business and conference travellers. For something squarely in the centre of town, consider The George boutique hotel, which is within walking distance of dozens of restaurants and pubs.