the followings are excerpts from my travel diary:
I was quite sad to leave the nice Pansion I was at, in the old town and so simple and cute- but sharing a bath with 4 strangers is bad enough, but having partitions instead of walls - including for the bath- was too intimate for me. so I checked myself into the Hotel Ero....
The ERO has the impersonal pseudo-luxury of a 40 year old building mostly used for OSCE personnel. The shower must have been bought 2nd hand from a bankrupt kibbutz- but it is all mine !!
for this privilege I will pay 50 instead of 10 € a night.... "
two days later:
"...the Ero may have been a mistake. for the luxury of a private bath I have a lumpy bed, thin blanket and no hot water. I think I miss the Pansion Oscar. Then again- I have internet access!"
and the next day:
"...Back in Mostar, the hotel had my room changed into a similar one that was less dilapidated and with actual running hot and cold water-ah, civilization!"

We arrived by car in Mostar in wild, windy, cold and rainy weather. The room was cold as the heating had not been on and it took overnight to really get warm - but then it was. Room was a bit bare and basic but quite large and light, with a great Mostar view out the balcony window (see pics). Close-ish to the old town, within reach of restaurants - try the Veranda across the bridge. Hotel restaurant itself is not that great but filled the bill on the first night when we didn't want to venture out into the weather. Staff are civil. There is parking for your car (you have to compete with the US embassy).

We notice some small accommodation places right next to the old town and would probably have a look into those if we ever came back. More convenient and picturesque.

Only stayed for one night. Was a freindly and efficient hotel. Room was comfortable but quite small. However, for one night this was not of much concern. Cost for the night was Euro 52.10 and I assume this was a standard rate but it was booked for me so I would check it. Large restaurant and well appointed. I had Pork Cutlets, which was a mistake. They were thin, dry and tough. However a colleague had steak tartare, this was prepared at the table and you are able to select the spices, herbs etc used to make it. Looked a better choice if you can face rare meat.

Smokers Note: You can smoke everywhere, there appear to be no restrictions I could see. Having come from the UK it was a pleasure to sit down having a smoke and a pint, sure there will be many who do not agree!

Our room was somewhat dated - clean, but rather old fashioned, both the bedroom and the bathroom. The air-conditioning was very efficient - grateful for that as the temperature when we arrived was about 40C. The balcony though was unattractive, just looking at a mass of concrete.
We were travelling by car so it was convenient to have a hotel with a car park, and we found the hotel without any problem using the map on the hotel website. However, we found it was quite a walk into the old town. The Hotel Bristol was nearer and looked quite nice, so if we went there again I think I would look at that hotel.
If driving from Split airport, as we did, I recommend a detour to Kravice waterfalls for a swim if the weather is hot. Really pretty falls into a pool. (Remember to get the right paperwork from the car hire company if crossing borders).