Rail – from Paddington Station London, tube to London Euston, over ground train to Watford Junction
Bus – from bus station at Heathrow terminal to Watford Junction Station
Join M4 at junction 4 exiting onto M25 at junction 4b (approx. 1 ½ miles). Continue on M25 (signposted Watford) and exist at junction 20 to roundabout. Take first exist onto A41 (signposted London NW, Watford). At the next roundabout take second exit onto A411. Continue along A411 onto Watford Gyratory one-way system (signposted Ring Road). Turn left into Clarendon Road (signposted Watford Junction Station) and hotel is on your immediate left.
Another option would be to check the availability at the Leonardo Hotel London Heathrow Airport, which is just a stone's throw away from the airport.
By public transport
Rail – from Luton airport terminal to Watford Junction Station
Bus – from Luton airport terminal to Watford Junction Station
At roundabout take the second exit onto Airport Way and continue to A505 (signposted Other Routes). Continue along A505 to A1081 (signposted St. Albans) and at Kidney Wood Roundabout take the second exit onto M1 spur. At roundabout take the first exist and join M1. Leave M1 at junction 5.
At slip road roundabout, take the second exit onto A4008 (signposted Town Centre). At Waterfields roundabout, take the second exist onto A411 towards town centre and onto Watford Gyratory.
Turn left (one-way) towards Ring Road.
Get into right hand lane and bear right onto Upton Road. Keep right turning right into Clarendon Road.