corporate-wage-slave

Hilton Hotels in Heathrow will be my specialist subject in my next appearance on Mastermind.

The hotels in question are:
Hilton T4 (often just called Hilton Heathrow for historical reasons)
Hilton T5
Hilton Garden Inn Hatton Cross
DoubleTree Bath Road

In 2018 I made at least 8 stays in each of the above. Some time in 2019 a new HGI Terminal 2 will open up, which will score highly for connectivity for all terminals. I'm not a fan of Hoppas and when I refer to buses below I mean the public Transport for London (TfL) buses.

To answer the question as posed in Post 1, I would go for Hilton T5, using it with either Uber or the taxi firm advertised on that property's main webpage on Hilton.com (currently Windsor Cars on 01753 677 677, £18 cash). You can do it by bus and in summer I often just walk to the hotel, it's about 1.5 miles., there is a very limited TfL service too. It has the biggest and most up to date rooms, it's quiet despite being right underneath runway 09L's approach, and its food, beverage, lounge and leisure facilities are top quartile. The OP here has the time to take good use of the facilities. There is a limited range of food options walking distance from the hotel.

Hilton T4 is much better located, due to the buses, trains and tubes to other terminals, you can get from T5 to T4 on the free public bus which runs every few minutes - you can assume on a 15 minute trip there. It has the better lounge, better staff, the food is a bit better than T5 but not to the extent of changing a decision based on more important factors. Its downsides are small rooms, long walkway from T4, and the limited facilities close to the hotel. Had the OP only had a short stay I would have suggested this option.

HGI Hatton Cross is often very inexpensive and can be great value for money. The rooms are reasonably good, avgeeks love some rooms since you get good views of aircraft movements, the breakfast is OK to good. Connectivity is quite good using the tube though there is a 5 minute, perhaps unattractive walk, from the tube station. It is the only one here with a self serve laundry. A downside is the slowest wifi of those listed here. No lounge but you can take drinks/snacks from the HGI Pantry.

Doubletree is often the cheapest option but it has good points to it, since the rooms are larger than the other hotels except Hilton T5. It has good bus connectivity to T2 and T3 and getting to T4 and T5 is fairly good too. Breakfast - the hot options are good and above the brand standard, but the cold options are the absolute minimum in the brand standard. It also have shops and restaurants near by. Just avoid rooms fronting on to Bath Road to avoid traffic vibrations from the traffic lights, but the App (online check in and digital key) fully works here. Note Queen rooms have armchairs / sofas in them, King rooms don't. No lounge but the do give out drinks tokens at the front desk.

There is a case for all of these hotels depending on what specifically you are looking for, and there are no real turkeys. However also note that Heathrow Express means that hotels near Paddington are in time terms not much further away, so that adds in Hilton Paddington and the Metropole.