We suggest to reserve a hotel in the city center.
Around Prager Strasse there are many good Hotels, close to the tram stops to reach the TU and not far (10-15 min walking distance) from the stop of the regional Bus 261 to reach HZDR.
The Boutique Hotel Rothenburger Hof ( https://www.rothenburgerhof.de/ ) is an usually appreciated alternative in Dresden-Neustadt, close to a stop of the regional Bus 261 and to all the transportation lines in the city.
Here a map with the different locations of the meeting.