DUS is particularly good on many hotels giving you (or selling for an eur or 2/day in quite cheap hotels) this HotelKombi ticket, it is valid in the whole of VRR that includes popping into NL: by train Venlo/Arnhem, by bus many more. The full list of such HTLs can be found on the site of Rheinbahn.de, the local transit operator. Around HBF=main station there are streets full of hotels.
Essen also has a few-there the operator is Rurbahn. And the IC-hotels also offer it anywhere-Duisburg, Dortmund. But Iám not very enthusiast about these hotels. If you want tipical british style: premierinn.de has also arrived, incl. DUS and a few other towns, but they do not give out these free tickets. But they do the tipical british free cf/T in room-otherwise quite uncommon here. Tipical german is also that when there is a messe=business fair, prices skyrocket high for hotels. But due to covid most of these have been cancelled.
This add-on is however as said above ONLY valid with longer term seasonal tickets-I think minimal 1 month. This is stated somewhere in the tipical german overlong unreadable conditions.
TIP: IF you go for a long weekend and with someone else: you can buy a VRR-ticket 2000 online for 1 month, this can start any day, buy for just a very cheap zone, as this ticket is valid for 2 persons and also VRR-wide sat/sun/hol and any day from 19.00. The cheapest ones cost around 60 eur, not valid before 9.00 mo-fr. With these you can add the 6.80 simple onward out of VRR. On times when its only valid in 1 zone, you can buy a VRR zusatzticket (about 3 eur, or in a 4-pack) and then travel all VRR to/fro the chosen zone. Thus this applies mo-fr from 9.00-19.00 OR indeed you can then also add the einfach weiter. EW is NOT a ride-at-will, it should be only valid for 1 logical trip from start to destination in the shortest time possible-no breaks, detours or zigzags allowed. But checks on this are very hard to do.
For the VRS area there were such tickets also in KÖLn, but these are currently suspended due to covid. However, in the BONN region you can buy for a lower price as the normal VRS-tickets Bonn Welcome Region Cards-for city, city XL or whole of VRS. Offered by tourist office.
The touristy area south-east of VRR is Sauerland and most hotels/pensions etc there give you a free Sauerlandcard, also valid on transport in this quite wide area.
You probably know that all these tix are for the trains only valid in NAHverkehr=local, not the fancy all-white ICE and IC.
VRR is since a year or 2 plagued with enormous train delays and lots of construction works/replacement lines.
www.mobil.nrw
) the relevant KombiTicket is the DüsseldorfCard which you pay for, not the free travel card that is paid for out of visitor tax in many parts of Germany - so check what the hotel offers!